diff --git a/.changeset/fn-7089-interview-other-option.md b/.changeset/fn-7089-interview-other-option.md
new file mode 100644
index 0000000000..c9e7184760
--- /dev/null
+++ b/.changeset/fn-7089-interview-other-option.md
@@ -0,0 +1,7 @@
+---
+"@runfusion/fusion": minor
+---
+
+summary: Add an "Other" free-text answer to planning and mission interview questions.
+category: feature
+dev: single_select/multi_select questions now render a synthetic Other option backed by a reserved `_other` response key, threaded through formatResponseForAgent/history formatters in planning.ts, mission-interview.ts, and milestone-slice-interview.ts.
diff --git a/docs/dashboard-guide.md b/docs/dashboard-guide.md
index 58a695a389..ed7993d54d 100644
--- a/docs/dashboard-guide.md
+++ b/docs/dashboard-guide.md
@@ -736,11 +736,13 @@ Workflow behavior:
 - If no workflow is selected, or workflow columns are unavailable, mission-created tasks continue to use the project default workflow.
 
 <!-- FNXC:MissionInterviewDocs 2026-06-25-15:55: FN-6975 made the Plan Mission with AI workspace movable/resizable on desktop while preserving mobile's fixed full-screen flow, and stream failures now surface one recoverable retry state instead of leaving the modal spinning. -->
+<!-- FNXC:PlanningInterview 2026-06-26-00:00: GitHub #1794 requires structured planning, mission, milestone, and slice interview questions to let users reject all provided single-select/multi-select options by choosing Other and writing their own answer. -->
 
 Plan Mission with AI modal behavior:
 - On desktop, the modal opens as a floating workspace that can be dragged by its title bar and resized from the window edges/corners.
 - On mobile, the mission interview keeps the fixed full-screen/sheet-style layout so touch users retain the original focused flow.
 - If the mission interview stream reports a terminal failure, the modal closes the failed stream, shows one normalized error, and offers retry without duplicating late error/complete events.
+- Structured single-select and multi-select interview questions include **Other (write your own)** so users can decline all suggested options, submit a free-text answer, or combine that text with selected multi-select options.
 
 ## Roadmaps View
 
diff --git a/packages/dashboard/app/components/MilestoneSliceInterviewModal.tsx b/packages/dashboard/app/components/MilestoneSliceInterviewModal.tsx
index 3506fbfa0f..97ab3c38db 100644
--- a/packages/dashboard/app/components/MilestoneSliceInterviewModal.tsx
+++ b/packages/dashboard/app/components/MilestoneSliceInterviewModal.tsx
@@ -36,6 +36,8 @@ import { useViewportMode } from "../hooks/useViewportMode";
 import { getSessionTabId } from "../utils/getSessionTabId";
 
 const WARNING_ICON = "⚠️";
+const MILESTONE_SLICE_OTHER_RESPONSE_KEY = "_other";
+const MILESTONE_SLICE_OTHER_OPTION_ID = "__other__";
 
 interface MilestoneSliceInterviewModalProps {
   isOpen: boolean;
@@ -645,9 +647,12 @@ interface InterviewQuestionFormProps {
 
 function InterviewQuestionForm({ question, progress, historyEntries, onSubmit }: InterviewQuestionFormProps) {
   const { t } = useTranslation("app");
+  const questionOptions = question.options ?? [];
   const [response, setResponse] = useState<QuestionResponse>({});
   const [textValue, setTextValue] = useState("");
   const [commentValue, setCommentValue] = useState("");
+  const [otherValue, setOtherValue] = useState("");
+  const [isOtherSelected, setIsOtherSelected] = useState(false);
 
   const handleSubmit = useCallback(() => {
     let nextResponse: QuestionResponse;
@@ -656,6 +661,24 @@ function InterviewQuestionForm({ question, progress, historyEntries, onSubmit }:
       nextResponse = { [question.id]: textValue };
     } else if (question.type === "confirm") {
       nextResponse = { [question.id]: response[question.id] === true };
+    } else if (question.type === "single_select") {
+      const trimmedOther = otherValue.trim();
+      /*
+      FNXC:PlanningInterview 2026-06-26-00:00:
+      GitHub #1794 requires milestone and slice interviews to let users decline every AI-provided single-select option and submit their own answer through `_other`.
+      */
+      nextResponse = isOtherSelected && trimmedOther.length > 0
+        ? { [MILESTONE_SLICE_OTHER_RESPONSE_KEY]: trimmedOther }
+        : response;
+    } else if (question.type === "multi_select") {
+      const trimmedOther = otherValue.trim();
+      /*
+      FNXC:PlanningInterview 2026-06-26-00:00:
+      Milestone and slice multi-select questions must support Other-only answers and Other-plus-option answers without forcing users into suggested choices they reject.
+      */
+      nextResponse = isOtherSelected && trimmedOther.length > 0
+        ? { ...response, [MILESTONE_SLICE_OTHER_RESPONSE_KEY]: trimmedOther }
+        : response;
     } else {
       nextResponse = response;
     }
@@ -666,12 +689,14 @@ function InterviewQuestionForm({ question, progress, historyEntries, onSubmit }:
     }
 
     onSubmit(nextResponse);
-  }, [commentValue, question, response, textValue, onSubmit]);
+  }, [commentValue, isOtherSelected, otherValue, question, response, textValue, onSubmit]);
 
   useEffect(() => {
     setResponse({});
     setTextValue("");
     setCommentValue("");
+    setOtherValue("");
+    setIsOtherSelected(false);
   }, [question.id]);
 
   const isValid = () => {
@@ -679,9 +704,17 @@ function InterviewQuestionForm({ question, progress, historyEntries, onSubmit }:
       case "text":
         return textValue.trim().length > 0;
       case "single_select":
-        return response[question.id] !== undefined;
+        /*
+        FNXC:PlanningInterview 2026-06-26-00:00:
+        Continue is valid for milestone/slice single-select questions when the user writes a non-empty Other answer, even with no provided option selected.
+        */
+        return response[question.id] !== undefined || (isOtherSelected && otherValue.trim().length > 0);
       case "multi_select":
-        return Array.isArray(response[question.id] as unknown) && (response[question.id] as unknown[]).length > 0;
+        /*
+        FNXC:PlanningInterview 2026-06-26-00:00:
+        Continue is valid for milestone/slice multi-select questions when Other has non-whitespace text, including the Other-only case.
+        */
+        return (Array.isArray(response[question.id] as unknown) && (response[question.id] as unknown[]).length > 0) || (isOtherSelected && otherValue.trim().length > 0);
       case "confirm":
         return response[question.id] !== undefined;
       default:
@@ -735,16 +768,20 @@ function InterviewQuestionForm({ question, progress, historyEntries, onSubmit }:
                 />
               )}
 
-              {question.type === "single_select" && question.options && (
+              {question.type === "single_select" && (
                 <div className="planning-radio-group" role="radiogroup">
-                  {question.options.map((option) => (
+                  {questionOptions.map((option) => (
                     <label key={option.id} className="planning-option planning-option--radio">
                       <input
                         type="radio"
                         name={question.id}
                         value={option.id}
-                        checked={response[question.id] === option.id}
-                        onChange={() => setResponse({ [question.id]: option.id })}
+                        checked={response[question.id] === option.id && !isOtherSelected}
+                        onChange={() => {
+                          setIsOtherSelected(false);
+                          setOtherValue("");
+                          setResponse({ [question.id]: option.id });
+                        }}
                       />
                       <div className="planning-option-content">
                         <span className="planning-option-label">{option.label}</span>
@@ -754,12 +791,40 @@ function InterviewQuestionForm({ question, progress, historyEntries, onSubmit }:
                       </div>
                     </label>
                   ))}
+                  {/* FNXC:PlanningInterview 2026-06-26-00:00: The synthetic Other radio keeps milestone/slice interviews redirectable when every provided answer is wrong for the user's intent. */}
+                  <label className="planning-option planning-option--radio" data-testid="planning-option-other">
+                    <input
+                      type="radio"
+                      name={question.id}
+                      value={MILESTONE_SLICE_OTHER_OPTION_ID}
+                      checked={isOtherSelected}
+                      onChange={() => {
+                        setIsOtherSelected(true);
+                        setResponse({});
+                      }}
+                    />
+                    <div className="planning-option-content">
+                      <span className="planning-option-label">{t("interview.otherOptionLabel", "Other (write your own)")}</span>
+                    </div>
+                  </label>
+                  {isOtherSelected && (
+                    <div className="planning-other-answer">
+                      <textarea
+                        className="planning-textarea"
+                        data-testid="planning-other-input"
+                        rows={2}
+                        placeholder={t("interview.otherOptionPlaceholder", "Write your own answer...")}
+                        value={otherValue}
+                        onChange={(e) => setOtherValue(e.target.value)}
+                      />
+                    </div>
+                  )}
                 </div>
               )}
 
-              {question.type === "multi_select" && question.options && (
+              {question.type === "multi_select" && (
                 <div className="planning-checkbox-group">
-                  {question.options.map((option) => {
+                  {questionOptions.map((option) => {
                     const selected = (response[question.id] as string[]) || [];
                     return (
                       <label key={option.id} className="planning-option planning-option--checkbox">
@@ -783,6 +848,35 @@ function InterviewQuestionForm({ question, progress, historyEntries, onSubmit }:
                       </label>
                     );
                   })}
+                  {/* FNXC:PlanningInterview 2026-06-26-00:00: The synthetic Other checkbox lets milestone/slice users submit their own answer by itself or alongside provided options. */}
+                  <label className="planning-option planning-option--checkbox" data-testid="planning-option-other">
+                    <input
+                      type="checkbox"
+                      value={MILESTONE_SLICE_OTHER_OPTION_ID}
+                      checked={isOtherSelected}
+                      onChange={(e) => {
+                        setIsOtherSelected(e.target.checked);
+                        if (!e.target.checked) {
+                          setOtherValue("");
+                        }
+                      }}
+                    />
+                    <div className="planning-option-content">
+                      <span className="planning-option-label">{t("interview.otherOptionLabel", "Other (write your own)")}</span>
+                    </div>
+                  </label>
+                  {isOtherSelected && (
+                    <div className="planning-other-answer">
+                      <textarea
+                        className="planning-textarea"
+                        data-testid="planning-other-input"
+                        rows={2}
+                        placeholder={t("interview.otherOptionPlaceholder", "Write your own answer...")}
+                        value={otherValue}
+                        onChange={(e) => setOtherValue(e.target.value)}
+                      />
+                    </div>
+                  )}
                 </div>
               )}
 
diff --git a/packages/dashboard/app/components/MissionInterviewModal.tsx b/packages/dashboard/app/components/MissionInterviewModal.tsx
index 43111a6e60..b4db63c810 100644
--- a/packages/dashboard/app/components/MissionInterviewModal.tsx
+++ b/packages/dashboard/app/components/MissionInterviewModal.tsx
@@ -76,6 +76,8 @@ function parseModelSelection(value: string): { provider?: string; modelId?: stri
 }
 
 const WARNING_ICON = "⚠️";
+const MISSION_INTERVIEW_OTHER_RESPONSE_KEY = "_other";
+const MISSION_INTERVIEW_OTHER_OPTION_ID = "__other__";
 
 interface MissionInterviewModalProps {
   isOpen: boolean;
@@ -1126,9 +1128,12 @@ interface InterviewQuestionFormProps {
 
 function InterviewQuestionForm({ question, progress, historyEntries, onSubmit }: InterviewQuestionFormProps) {
   const { t } = useTranslation("app");
+  const questionOptions = question.options ?? [];
   const [response, setResponse] = useState<QuestionResponse>({});
   const [textValue, setTextValue] = useState("");
   const [commentValue, setCommentValue] = useState("");
+  const [otherValue, setOtherValue] = useState("");
+  const [isOtherSelected, setIsOtherSelected] = useState(false);
 
   const handleSubmit = useCallback(() => {
     let nextResponse: QuestionResponse;
@@ -1137,6 +1142,24 @@ function InterviewQuestionForm({ question, progress, historyEntries, onSubmit }:
       nextResponse = { [question.id]: textValue };
     } else if (question.type === "confirm") {
       nextResponse = { [question.id]: response[question.id] === true };
+    } else if (question.type === "single_select") {
+      const trimmedOther = otherValue.trim();
+      /*
+      FNXC:PlanningInterview 2026-06-26-00:00:
+      GitHub #1794 requires mission interviews to let users decline every AI-provided single-select option and submit their own answer through the reserved `_other` key.
+      */
+      nextResponse = isOtherSelected && trimmedOther.length > 0
+        ? { [MISSION_INTERVIEW_OTHER_RESPONSE_KEY]: trimmedOther }
+        : response;
+    } else if (question.type === "multi_select") {
+      const trimmedOther = otherValue.trim();
+      /*
+      FNXC:PlanningInterview 2026-06-26-00:00:
+      Mission multi-select questions must preserve chosen provided options while adding a user-authored Other answer when the user wants framing beyond the offered choices.
+      */
+      nextResponse = isOtherSelected && trimmedOther.length > 0
+        ? { ...response, [MISSION_INTERVIEW_OTHER_RESPONSE_KEY]: trimmedOther }
+        : response;
     } else {
       nextResponse = response;
     }
@@ -1147,12 +1170,14 @@ function InterviewQuestionForm({ question, progress, historyEntries, onSubmit }:
     }
 
     onSubmit(nextResponse);
-  }, [commentValue, question, response, textValue, onSubmit]);
+  }, [commentValue, isOtherSelected, otherValue, question, response, textValue, onSubmit]);
 
   useEffect(() => {
     setResponse({});
     setTextValue("");
     setCommentValue("");
+    setOtherValue("");
+    setIsOtherSelected(false);
   }, [question.id]);
 
   const isValid = () => {
@@ -1160,9 +1185,17 @@ function InterviewQuestionForm({ question, progress, historyEntries, onSubmit }:
       case "text":
         return textValue.trim().length > 0;
       case "single_select":
-        return response[question.id] !== undefined;
+        /*
+        FNXC:PlanningInterview 2026-06-26-00:00:
+        Continue is valid for mission single-select questions when the user writes a non-empty Other answer, even with no provided option selected.
+        */
+        return response[question.id] !== undefined || (isOtherSelected && otherValue.trim().length > 0);
       case "multi_select":
-        return Array.isArray(response[question.id] as unknown) && (response[question.id] as unknown[]).length > 0;
+        /*
+        FNXC:PlanningInterview 2026-06-26-00:00:
+        Continue is valid for mission multi-select questions when Other has non-whitespace text, including the Other-only case.
+        */
+        return (Array.isArray(response[question.id] as unknown) && (response[question.id] as unknown[]).length > 0) || (isOtherSelected && otherValue.trim().length > 0);
       case "confirm":
         return response[question.id] !== undefined;
       default:
@@ -1216,16 +1249,20 @@ function InterviewQuestionForm({ question, progress, historyEntries, onSubmit }:
                 />
               )}
 
-              {question.type === "single_select" && question.options && (
+              {question.type === "single_select" && (
                 <div className="planning-radio-group" role="radiogroup">
-                  {question.options.map((option) => (
+                  {questionOptions.map((option) => (
                     <label key={option.id} className="planning-option planning-option--radio">
                       <input
                         type="radio"
                         name={question.id}
                         value={option.id}
-                        checked={response[question.id] === option.id}
-                        onChange={() => setResponse({ [question.id]: option.id })}
+                        checked={response[question.id] === option.id && !isOtherSelected}
+                        onChange={() => {
+                          setIsOtherSelected(false);
+                          setOtherValue("");
+                          setResponse({ [question.id]: option.id });
+                        }}
                       />
                       <div className="planning-option-content">
                         <span className="planning-option-label">{option.label}</span>
@@ -1235,12 +1272,40 @@ function InterviewQuestionForm({ question, progress, historyEntries, onSubmit }:
                       </div>
                     </label>
                   ))}
+                  {/* FNXC:PlanningInterview 2026-06-26-00:00: The synthetic Other radio gives mission users an explicit way to reject all provided choices while staying in the structured interview. */}
+                  <label className="planning-option planning-option--radio" data-testid="planning-option-other">
+                    <input
+                      type="radio"
+                      name={question.id}
+                      value={MISSION_INTERVIEW_OTHER_OPTION_ID}
+                      checked={isOtherSelected}
+                      onChange={() => {
+                        setIsOtherSelected(true);
+                        setResponse({});
+                      }}
+                    />
+                    <div className="planning-option-content">
+                      <span className="planning-option-label">{t("missions.otherOptionLabel", "Other (write your own)")}</span>
+                    </div>
+                  </label>
+                  {isOtherSelected && (
+                    <div className="planning-other-answer">
+                      <textarea
+                        className="planning-textarea"
+                        data-testid="planning-other-input"
+                        rows={2}
+                        placeholder={t("missions.otherOptionPlaceholder", "Write your own answer...")}
+                        value={otherValue}
+                        onChange={(e) => setOtherValue(e.target.value)}
+                      />
+                    </div>
+                  )}
                 </div>
               )}
 
-              {question.type === "multi_select" && question.options && (
+              {question.type === "multi_select" && (
                 <div className="planning-checkbox-group">
-                  {question.options.map((option) => {
+                  {questionOptions.map((option) => {
                     const selected = (response[question.id] as string[]) || [];
                     return (
                       <label key={option.id} className="planning-option planning-option--checkbox">
@@ -1264,6 +1329,35 @@ function InterviewQuestionForm({ question, progress, historyEntries, onSubmit }:
                       </label>
                     );
                   })}
+                  {/* FNXC:PlanningInterview 2026-06-26-00:00: The synthetic Other checkbox is additive for mission multi-select questions so user-authored answers can stand alone or augment provided options. */}
+                  <label className="planning-option planning-option--checkbox" data-testid="planning-option-other">
+                    <input
+                      type="checkbox"
+                      value={MISSION_INTERVIEW_OTHER_OPTION_ID}
+                      checked={isOtherSelected}
+                      onChange={(e) => {
+                        setIsOtherSelected(e.target.checked);
+                        if (!e.target.checked) {
+                          setOtherValue("");
+                        }
+                      }}
+                    />
+                    <div className="planning-option-content">
+                      <span className="planning-option-label">{t("missions.otherOptionLabel", "Other (write your own)")}</span>
+                    </div>
+                  </label>
+                  {isOtherSelected && (
+                    <div className="planning-other-answer">
+                      <textarea
+                        className="planning-textarea"
+                        data-testid="planning-other-input"
+                        rows={2}
+                        placeholder={t("missions.otherOptionPlaceholder", "Write your own answer...")}
+                        value={otherValue}
+                        onChange={(e) => setOtherValue(e.target.value)}
+                      />
+                    </div>
+                  )}
                 </div>
               )}
 
diff --git a/packages/dashboard/app/components/PlanningModeModal.css b/packages/dashboard/app/components/PlanningModeModal.css
index 5c6ecef699..1d79b4a2f5 100644
--- a/packages/dashboard/app/components/PlanningModeModal.css
+++ b/packages/dashboard/app/components/PlanningModeModal.css
@@ -766,6 +766,14 @@ An empty footer must NOT reserve vertical space or paint its divider band. When
   margin-top: var(--space-lg);
 }
 
+.planning-other-answer {
+  margin-top: var(--space-sm);
+}
+
+.planning-other-answer .planning-textarea {
+  min-height: calc(var(--space-md) * 5);
+}
+
 .planning-comment-label {
   display: block;
   margin-bottom: var(--space-xs);
@@ -1627,7 +1635,8 @@ Tablet embedded Planning keeps the desktop two-pane shell, so the summary footer
     font-size: 16px;
   }
 
-  .planning-comment-section .planning-textarea {
+  .planning-comment-section .planning-textarea,
+  .planning-other-answer .planning-textarea {
     min-height: calc(var(--space-md) * 5);
   }
 
diff --git a/packages/dashboard/app/components/PlanningModeModal.tsx b/packages/dashboard/app/components/PlanningModeModal.tsx
index d12db53a8b..18d6b0e704 100644
--- a/packages/dashboard/app/components/PlanningModeModal.tsx
+++ b/packages/dashboard/app/components/PlanningModeModal.tsx
@@ -156,6 +156,9 @@ function normalizePlanningSummary(summary: PlanningSummary): PlanningSummary {
   };
 }
 
+const PLANNING_OTHER_RESPONSE_KEY = "_other";
+const PLANNING_OTHER_OPTION_ID = "__other__";
+
 function normalizeQuestionOptions(question: PlanningQuestion): PlanningQuestion {
   if (question.type !== "single_select" && question.type !== "multi_select") {
     return question;
@@ -2430,6 +2433,8 @@ function QuestionForm({ question: rawQuestion, progress, historyEntries, onSubmi
   const [response, setResponse] = useState<QuestionResponse>({});
   const [textValue, setTextValue] = useState("");
   const [commentValue, setCommentValue] = useState("");
+  const [otherValue, setOtherValue] = useState("");
+  const [isOtherSelected, setIsOtherSelected] = useState(false);
   const { ref: textAnswerAutosizeRef } = useAutosizeTextarea({
     value: textValue,
     minHeight: 120,
@@ -2442,6 +2447,12 @@ function QuestionForm({ question: rawQuestion, progress, historyEntries, onSubmi
     maxHeight: 640,
     deps: [question.id],
   });
+  const { ref: otherAutosizeRef } = useAutosizeTextarea({
+    value: otherValue,
+    minHeight: 80,
+    maxHeight: 640,
+    deps: [question.id],
+  });
 
   const handleSubmit = useCallback(() => {
     let nextResponse: QuestionResponse;
@@ -2450,6 +2461,24 @@ function QuestionForm({ question: rawQuestion, progress, historyEntries, onSubmi
       nextResponse = { [question.id]: textValue };
     } else if (question.type === "confirm") {
       nextResponse = { [question.id]: response[question.id] === true };
+    } else if (question.type === "single_select") {
+      const trimmedOther = otherValue.trim();
+      /*
+      FNXC:PlanningInterview 2026-06-26-00:00:
+      GitHub #1794 requires dashboard planning interviews to let users reject every AI-provided single-select option and submit their own framing instead. Store that answer under the reserved `_other` key so agent prompts and history can distinguish it from an option id.
+      */
+      nextResponse = isOtherSelected && trimmedOther.length > 0
+        ? { [PLANNING_OTHER_RESPONSE_KEY]: trimmedOther }
+        : response;
+    } else if (question.type === "multi_select") {
+      const trimmedOther = otherValue.trim();
+      /*
+      FNXC:PlanningInterview 2026-06-26-00:00:
+      Multi-select planning questions can combine provided choices with a user-authored Other answer. Preserve selected option ids and append `_other` only while the Other checkbox is active and non-empty.
+      */
+      nextResponse = isOtherSelected && trimmedOther.length > 0
+        ? { ...response, [PLANNING_OTHER_RESPONSE_KEY]: trimmedOther }
+        : response;
     } else {
       nextResponse = response;
     }
@@ -2460,13 +2489,15 @@ function QuestionForm({ question: rawQuestion, progress, historyEntries, onSubmi
     }
 
     onSubmit(nextResponse);
-  }, [commentValue, question, response, textValue, onSubmit]);
+  }, [commentValue, isOtherSelected, otherValue, question, response, textValue, onSubmit]);
 
   // Reset state when question changes
   useEffect(() => {
     setResponse({});
     setTextValue("");
     setCommentValue("");
+    setOtherValue("");
+    setIsOtherSelected(false);
   }, [question.id]);
 
   const isValid = () => {
@@ -2474,9 +2505,17 @@ function QuestionForm({ question: rawQuestion, progress, historyEntries, onSubmi
       case "text":
         return textValue.trim().length > 0;
       case "single_select":
-        return response[question.id] !== undefined;
+        /*
+        FNXC:PlanningInterview 2026-06-26-00:00:
+        The Other radio is a first-class valid answer only when it has non-whitespace text; the Continue button must not force an unwanted provided option.
+        */
+        return response[question.id] !== undefined || (isOtherSelected && otherValue.trim().length > 0);
       case "multi_select":
-        return Array.isArray(response[question.id] as unknown) && (response[question.id] as unknown[]).length > 0;
+        /*
+        FNXC:PlanningInterview 2026-06-26-00:00:
+        The Other checkbox may be the only multi-select answer, but empty Other text is incomplete so users do not submit a blank custom answer.
+        */
+        return (Array.isArray(response[question.id] as unknown) && (response[question.id] as unknown[]).length > 0) || (isOtherSelected && otherValue.trim().length > 0);
       case "confirm":
         return response[question.id] !== undefined;
       default:
@@ -2538,8 +2577,12 @@ function QuestionForm({ question: rawQuestion, progress, historyEntries, onSubmi
                         type="radio"
                         name={question.id}
                         value={option.id}
-                        checked={response[question.id] === option.id}
-                        onChange={() => setResponse({ [question.id]: option.id })}
+                        checked={response[question.id] === option.id && !isOtherSelected}
+                        onChange={() => {
+                          setIsOtherSelected(false);
+                          setOtherValue("");
+                          setResponse({ [question.id]: option.id });
+                        }}
                       />
                       <div className="planning-option-content">
                         <span className="planning-option-label">{option.label}</span>
@@ -2549,6 +2592,34 @@ function QuestionForm({ question: rawQuestion, progress, historyEntries, onSubmi
                       </div>
                     </label>
                   ))}
+                  {/* FNXC:PlanningInterview 2026-06-26-00:00: The synthetic Other radio must appear beside provided options so planning users can decline all suggested answers without leaving the structured question flow. */}
+                  <label className="planning-option planning-option--radio" data-testid="planning-option-other">
+                    <input
+                      type="radio"
+                      name={question.id}
+                      value={PLANNING_OTHER_OPTION_ID}
+                      checked={isOtherSelected}
+                      onChange={() => {
+                        setIsOtherSelected(true);
+                        setResponse({});
+                      }}
+                    />
+                    <div className="planning-option-content">
+                      <span className="planning-option-label">{t("planning.otherOptionLabel", "Other (write your own)")}</span>
+                    </div>
+                  </label>
+                  {isOtherSelected && (
+                    <div className="planning-other-answer">
+                      <textarea
+                        ref={otherAutosizeRef}
+                        className="planning-textarea"
+                        data-testid="planning-other-input"
+                        placeholder={t("planning.otherOptionPlaceholder", "Write your own answer...")}
+                        value={otherValue}
+                        onChange={(e) => setOtherValue(e.target.value)}
+                      />
+                    </div>
+                  )}
                 </div>
               )}
 
@@ -2578,6 +2649,35 @@ function QuestionForm({ question: rawQuestion, progress, historyEntries, onSubmi
                       </label>
                     );
                   })}
+                  {/* FNXC:PlanningInterview 2026-06-26-00:00: The synthetic Other checkbox is additive for multi-select so users can mix provided answers with their own answer or use only their own answer. */}
+                  <label className="planning-option planning-option--checkbox" data-testid="planning-option-other">
+                    <input
+                      type="checkbox"
+                      value={PLANNING_OTHER_OPTION_ID}
+                      checked={isOtherSelected}
+                      onChange={(e) => {
+                        setIsOtherSelected(e.target.checked);
+                        if (!e.target.checked) {
+                          setOtherValue("");
+                        }
+                      }}
+                    />
+                    <div className="planning-option-content">
+                      <span className="planning-option-label">{t("planning.otherOptionLabel", "Other (write your own)")}</span>
+                    </div>
+                  </label>
+                  {isOtherSelected && (
+                    <div className="planning-other-answer">
+                      <textarea
+                        ref={otherAutosizeRef}
+                        className="planning-textarea"
+                        data-testid="planning-other-input"
+                        placeholder={t("planning.otherOptionPlaceholder", "Write your own answer...")}
+                        value={otherValue}
+                        onChange={(e) => setOtherValue(e.target.value)}
+                      />
+                    </div>
+                  )}
                 </div>
               )}
 
diff --git a/packages/dashboard/app/components/__tests__/MilestoneSliceInterviewModal.test.tsx b/packages/dashboard/app/components/__tests__/MilestoneSliceInterviewModal.test.tsx
index 0678e30db3..634c20093e 100644
--- a/packages/dashboard/app/components/__tests__/MilestoneSliceInterviewModal.test.tsx
+++ b/packages/dashboard/app/components/__tests__/MilestoneSliceInterviewModal.test.tsx
@@ -454,6 +454,319 @@ describe("MilestoneSliceInterviewModal", () => {
   });
 
   describe("comment input", () => {
+    it("submits trimmed Other-only answers for single-select milestone questions", async () => {
+      mockStartMilestoneInterview.mockResolvedValue({ sessionId: "session-123" });
+
+      render(
+        <MilestoneSliceInterviewModal
+          isOpen={true}
+          onClose={vi.fn()}
+          onApplied={vi.fn()}
+          targetType="milestone"
+          targetId="MS-001"
+          targetTitle="Test Milestone"
+          projectId="test-project"
+        />,
+      );
+
+      fireEvent.click(screen.getByText("Start Interview"));
+
+      await waitFor(() => {
+        expect(screen.getByText(/Preparing next question/)).toBeDefined();
+      });
+
+      act(() => {
+        streamHandlers.onQuestion(SAMPLE_QUESTION);
+      });
+
+      await screen.findByText("What is the target scope?");
+      const continueButton = screen.getByRole("button", { name: /Continue/ });
+      fireEvent.click(screen.getByTestId("planning-option-other"));
+      expect(continueButton).toBeDisabled();
+
+      fireEvent.change(screen.getByTestId("planning-other-input"), {
+        target: { value: "  Split this differently  " },
+      });
+      expect(continueButton).toBeEnabled();
+      fireEvent.click(continueButton);
+
+      await waitFor(() => {
+        expect(mockRespondToMilestoneInterview).toHaveBeenCalledWith(
+          "session-123",
+          { _other: "Split this differently" },
+          "test-project",
+          "test-tab-id",
+        );
+      });
+    });
+
+    it("renders Other for single-select milestone questions with no provided options", async () => {
+      mockStartMilestoneInterview.mockResolvedValue({ sessionId: "session-123" });
+
+      render(
+        <MilestoneSliceInterviewModal
+          isOpen={true}
+          onClose={vi.fn()}
+          onApplied={vi.fn()}
+          targetType="milestone"
+          targetId="MS-001"
+          targetTitle="Test Milestone"
+          projectId="test-project"
+        />,
+      );
+
+      fireEvent.click(screen.getByText("Start Interview"));
+
+      await waitFor(() => {
+        expect(screen.getByText(/Preparing next question/)).toBeDefined();
+      });
+
+      act(() => {
+        streamHandlers.onQuestion({
+          id: "open_scope",
+          type: "single_select",
+          question: "What is the target scope?",
+        });
+      });
+
+      await screen.findByText("What is the target scope?");
+      const continueButton = screen.getByRole("button", { name: /Continue/ });
+      expect(screen.getByTestId("planning-option-other")).toBeInTheDocument();
+      fireEvent.click(screen.getByTestId("planning-option-other"));
+      expect(continueButton).toBeDisabled();
+
+      fireEvent.change(screen.getByTestId("planning-other-input"), {
+        target: { value: "  Define a custom scope  " },
+      });
+      expect(continueButton).toBeEnabled();
+      fireEvent.click(continueButton);
+
+      await waitFor(() => {
+        expect(mockRespondToMilestoneInterview).toHaveBeenCalledWith(
+          "session-123",
+          { _other: "Define a custom scope" },
+          "test-project",
+          "test-tab-id",
+        );
+      });
+    });
+
+    it("clears stale Other text when unchecking Other in multi-select slice questions", async () => {
+      mockStartSliceInterview.mockResolvedValue({ sessionId: "slice-session-123" });
+
+      render(
+        <MilestoneSliceInterviewModal
+          isOpen={true}
+          onClose={vi.fn()}
+          onApplied={vi.fn()}
+          targetType="slice"
+          targetId="SL-001"
+          targetTitle="Test Slice"
+          projectId="test-project"
+        />,
+      );
+
+      fireEvent.click(screen.getByText("Start Interview"));
+
+      await waitFor(() => {
+        expect(screen.getByText(/Preparing next question/)).toBeDefined();
+      });
+
+      act(() => {
+        streamHandlers.onQuestion({
+          id: "priorities",
+          type: "multi_select",
+          question: "Which priorities matter?",
+          options: [
+            { id: "speed", label: "Speed" },
+            { id: "quality", label: "Quality" },
+          ],
+        });
+      });
+
+      await screen.findByText("Which priorities matter?");
+      const continueButton = screen.getByRole("button", { name: /Continue/ });
+      fireEvent.click(screen.getByTestId("planning-option-other"));
+      fireEvent.change(screen.getByTestId("planning-other-input"), { target: { value: "   " } });
+      expect(continueButton).toBeDisabled();
+      fireEvent.change(screen.getByTestId("planning-other-input"), {
+        target: { value: "Keep this manual" },
+      });
+      expect(continueButton).toBeEnabled();
+
+      fireEvent.click(screen.getByText("Speed"));
+      fireEvent.click(screen.getByTestId("planning-option-other"));
+      expect(screen.queryByTestId("planning-other-input")).toBeNull();
+      fireEvent.click(continueButton);
+
+      await waitFor(() => {
+        expect(mockRespondToSliceInterview).toHaveBeenCalledWith(
+          "slice-session-123",
+          { priorities: ["speed"] },
+          "test-project",
+          "test-tab-id",
+        );
+      });
+    });
+
+    it("submits Other-only answers for multi-select slice questions", async () => {
+      mockStartSliceInterview.mockResolvedValue({ sessionId: "slice-session-123" });
+
+      render(
+        <MilestoneSliceInterviewModal
+          isOpen={true}
+          onClose={vi.fn()}
+          onApplied={vi.fn()}
+          targetType="slice"
+          targetId="SL-001"
+          targetTitle="Test Slice"
+          projectId="test-project"
+        />,
+      );
+
+      fireEvent.click(screen.getByText("Start Interview"));
+
+      await waitFor(() => {
+        expect(screen.getByText(/Preparing next question/)).toBeDefined();
+      });
+
+      act(() => {
+        streamHandlers.onQuestion({
+          id: "priorities",
+          type: "multi_select",
+          question: "Which priorities matter?",
+          options: [
+            { id: "speed", label: "Speed" },
+            { id: "quality", label: "Quality" },
+          ],
+        });
+      });
+
+      await screen.findByText("Which priorities matter?");
+      const continueButton = screen.getByRole("button", { name: /Continue/ });
+      fireEvent.click(screen.getByTestId("planning-option-other"));
+      expect(continueButton).toBeDisabled();
+
+      fireEvent.change(screen.getByTestId("planning-other-input"), {
+        target: { value: "  Reframe around dependencies  " },
+      });
+      expect(continueButton).toBeEnabled();
+      fireEvent.click(continueButton);
+
+      await waitFor(() => {
+        expect(mockRespondToSliceInterview).toHaveBeenCalledWith(
+          "slice-session-123",
+          { _other: "Reframe around dependencies" },
+          "test-project",
+          "test-tab-id",
+        );
+      });
+    });
+
+    it("renders Other for multi-select slice questions with no provided options", async () => {
+      mockStartSliceInterview.mockResolvedValue({ sessionId: "slice-session-123" });
+
+      render(
+        <MilestoneSliceInterviewModal
+          isOpen={true}
+          onClose={vi.fn()}
+          onApplied={vi.fn()}
+          targetType="slice"
+          targetId="SL-001"
+          targetTitle="Test Slice"
+          projectId="test-project"
+        />,
+      );
+
+      fireEvent.click(screen.getByText("Start Interview"));
+
+      await waitFor(() => {
+        expect(screen.getByText(/Preparing next question/)).toBeDefined();
+      });
+
+      act(() => {
+        streamHandlers.onQuestion({
+          id: "open_priorities",
+          type: "multi_select",
+          question: "Which priorities matter?",
+        });
+      });
+
+      await screen.findByText("Which priorities matter?");
+      const continueButton = screen.getByRole("button", { name: /Continue/ });
+      expect(screen.getByTestId("planning-option-other")).toBeInTheDocument();
+      fireEvent.click(screen.getByTestId("planning-option-other"));
+      expect(continueButton).toBeDisabled();
+
+      fireEvent.change(screen.getByTestId("planning-other-input"), {
+        target: { value: "  Ask customers first  " },
+      });
+      expect(continueButton).toBeEnabled();
+      fireEvent.click(continueButton);
+
+      await waitFor(() => {
+        expect(mockRespondToSliceInterview).toHaveBeenCalledWith(
+          "slice-session-123",
+          { _other: "Ask customers first" },
+          "test-project",
+          "test-tab-id",
+        );
+      });
+    });
+
+    it("combines provided options with Other text for multi-select slice questions", async () => {
+      mockStartSliceInterview.mockResolvedValue({ sessionId: "slice-session-123" });
+
+      render(
+        <MilestoneSliceInterviewModal
+          isOpen={true}
+          onClose={vi.fn()}
+          onApplied={vi.fn()}
+          targetType="slice"
+          targetId="SL-001"
+          targetTitle="Test Slice"
+          projectId="test-project"
+        />,
+      );
+
+      fireEvent.click(screen.getByText("Start Interview"));
+
+      await waitFor(() => {
+        expect(screen.getByText(/Preparing next question/)).toBeDefined();
+      });
+
+      act(() => {
+        streamHandlers.onQuestion({
+          id: "priorities",
+          type: "multi_select",
+          question: "Which priorities matter?",
+          options: [
+            { id: "speed", label: "Speed" },
+            { id: "quality", label: "Quality" },
+          ],
+        });
+      });
+
+      await screen.findByText("Which priorities matter?");
+      const continueButton = screen.getByRole("button", { name: /Continue/ });
+      fireEvent.click(screen.getByText("Speed"));
+      fireEvent.click(screen.getByTestId("planning-option-other"));
+      fireEvent.change(screen.getByTestId("planning-other-input"), {
+        target: { value: "  Preserve manual review  " },
+      });
+      expect(continueButton).toBeEnabled();
+      fireEvent.click(continueButton);
+
+      await waitFor(() => {
+        expect(mockRespondToSliceInterview).toHaveBeenCalledWith(
+          "slice-session-123",
+          { priorities: ["speed"], _other: "Preserve manual review" },
+          "test-project",
+          "test-tab-id",
+        );
+      });
+    });
+
     it("shows comment textarea and submits _comment in milestone interview", async () => {
       mockStartMilestoneInterview.mockResolvedValue({ sessionId: "session-123" });
 
diff --git a/packages/dashboard/app/components/__tests__/MissionInterviewModal.test.tsx b/packages/dashboard/app/components/__tests__/MissionInterviewModal.test.tsx
index 4e70988514..7cb54dec8f 100644
--- a/packages/dashboard/app/components/__tests__/MissionInterviewModal.test.tsx
+++ b/packages/dashboard/app/components/__tests__/MissionInterviewModal.test.tsx
@@ -617,6 +617,250 @@ describe("MissionInterviewModal", () => {
     });
   });
 
+  it("submits trimmed Other-only answers for single-select mission questions", async () => {
+    renderModal();
+
+    fireEvent.change(screen.getByLabelText("What do you want to build?"), {
+      target: { value: "Build a mission planning workflow" },
+    });
+    fireEvent.click(screen.getByText("Start Interview"));
+
+    await waitFor(() => {
+      expect(streamHandlers).toBeDefined();
+    });
+
+    act(() => {
+      streamHandlers.onQuestion?.(SAMPLE_QUESTION);
+    });
+
+    const continueButton = await screen.findByRole("button", { name: "Continue" });
+    fireEvent.click(screen.getByTestId("planning-option-other"));
+    expect(continueButton).toBeDisabled();
+
+    fireEvent.change(screen.getByTestId("planning-other-input"), {
+      target: { value: "  Start with discovery instead  " },
+    });
+    expect(continueButton).toBeEnabled();
+    fireEvent.click(continueButton);
+
+    await waitFor(() => {
+      expect(mockRespondToMissionInterview).toHaveBeenCalledWith(
+        "mission-session-1",
+        { _other: "Start with discovery instead" },
+        undefined,
+        expect.any(String),
+      );
+    });
+  });
+
+  it("renders Other for single-select mission questions with no provided options", async () => {
+    renderModal();
+
+    fireEvent.change(screen.getByLabelText("What do you want to build?"), {
+      target: { value: "Build a mission planning workflow" },
+    });
+    fireEvent.click(screen.getByText("Start Interview"));
+
+    await waitFor(() => {
+      expect(streamHandlers).toBeDefined();
+    });
+
+    act(() => {
+      streamHandlers.onQuestion?.({
+        id: "open_scope",
+        type: "single_select",
+        question: "What scope should we use?",
+      });
+    });
+
+    const continueButton = await screen.findByRole("button", { name: "Continue" });
+    expect(screen.getByTestId("planning-option-other")).toBeInTheDocument();
+    fireEvent.click(screen.getByTestId("planning-option-other"));
+    expect(continueButton).toBeDisabled();
+
+    fireEvent.change(screen.getByTestId("planning-other-input"), {
+      target: { value: "  Define a custom scope  " },
+    });
+    expect(continueButton).toBeEnabled();
+    fireEvent.click(continueButton);
+
+    await waitFor(() => {
+      expect(mockRespondToMissionInterview).toHaveBeenCalledWith(
+        "mission-session-1",
+        { _other: "Define a custom scope" },
+        undefined,
+        expect.any(String),
+      );
+    });
+  });
+
+  it("clears stale Other text when switching back to a provided mission option", async () => {
+    renderModal();
+
+    fireEvent.change(screen.getByLabelText("What do you want to build?"), {
+      target: { value: "Build a mission planning workflow" },
+    });
+    fireEvent.click(screen.getByText("Start Interview"));
+
+    await waitFor(() => {
+      expect(streamHandlers).toBeDefined();
+    });
+
+    act(() => {
+      streamHandlers.onQuestion?.(SAMPLE_QUESTION);
+    });
+
+    const continueButton = await screen.findByRole("button", { name: "Continue" });
+    fireEvent.click(screen.getByTestId("planning-option-other"));
+    fireEvent.change(screen.getByTestId("planning-other-input"), { target: { value: "   " } });
+    expect(continueButton).toBeDisabled();
+    fireEvent.change(screen.getByTestId("planning-other-input"), {
+      target: { value: "Plan a discovery mission" },
+    });
+    expect(continueButton).toBeEnabled();
+
+    fireEvent.click(screen.getByText("MVP"));
+    expect(screen.queryByTestId("planning-other-input")).toBeNull();
+    fireEvent.click(continueButton);
+
+    await waitFor(() => {
+      expect(mockRespondToMissionInterview).toHaveBeenCalledWith(
+        "mission-session-1",
+        { scope: "mvp" },
+        undefined,
+        expect.any(String),
+      );
+    });
+  });
+
+  it("submits Other-only answers for multi-select mission questions", async () => {
+    renderModal();
+
+    fireEvent.change(screen.getByLabelText("What do you want to build?"), {
+      target: { value: "Build a mission planning workflow" },
+    });
+    fireEvent.click(screen.getByText("Start Interview"));
+
+    await waitFor(() => {
+      expect(streamHandlers).toBeDefined();
+    });
+
+    act(() => {
+      streamHandlers.onQuestion?.({
+        id: "priorities",
+        type: "multi_select",
+        question: "Which priorities matter?",
+        options: [
+          { id: "speed", label: "Speed" },
+          { id: "quality", label: "Quality" },
+        ],
+      });
+    });
+
+    const continueButton = await screen.findByRole("button", { name: "Continue" });
+    fireEvent.click(screen.getByTestId("planning-option-other"));
+    expect(continueButton).toBeDisabled();
+
+    fireEvent.change(screen.getByTestId("planning-other-input"), {
+      target: { value: "  Add field research first  " },
+    });
+    expect(continueButton).toBeEnabled();
+    fireEvent.click(continueButton);
+
+    await waitFor(() => {
+      expect(mockRespondToMissionInterview).toHaveBeenCalledWith(
+        "mission-session-1",
+        { _other: "Add field research first" },
+        undefined,
+        expect.any(String),
+      );
+    });
+  });
+
+  it("renders Other for multi-select mission questions with no provided options", async () => {
+    renderModal();
+
+    fireEvent.change(screen.getByLabelText("What do you want to build?"), {
+      target: { value: "Build a mission planning workflow" },
+    });
+    fireEvent.click(screen.getByText("Start Interview"));
+
+    await waitFor(() => {
+      expect(streamHandlers).toBeDefined();
+    });
+
+    act(() => {
+      streamHandlers.onQuestion?.({
+        id: "open_priorities",
+        type: "multi_select",
+        question: "Which priorities matter?",
+      });
+    });
+
+    const continueButton = await screen.findByRole("button", { name: "Continue" });
+    expect(screen.getByTestId("planning-option-other")).toBeInTheDocument();
+    fireEvent.click(screen.getByTestId("planning-option-other"));
+    expect(continueButton).toBeDisabled();
+
+    fireEvent.change(screen.getByTestId("planning-other-input"), {
+      target: { value: "  Ask customers first  " },
+    });
+    expect(continueButton).toBeEnabled();
+    fireEvent.click(continueButton);
+
+    await waitFor(() => {
+      expect(mockRespondToMissionInterview).toHaveBeenCalledWith(
+        "mission-session-1",
+        { _other: "Ask customers first" },
+        undefined,
+        expect.any(String),
+      );
+    });
+  });
+
+  it("combines provided options with Other text for multi-select mission questions", async () => {
+    renderModal();
+
+    fireEvent.change(screen.getByLabelText("What do you want to build?"), {
+      target: { value: "Build a mission planning workflow" },
+    });
+    fireEvent.click(screen.getByText("Start Interview"));
+
+    await waitFor(() => {
+      expect(streamHandlers).toBeDefined();
+    });
+
+    act(() => {
+      streamHandlers.onQuestion?.({
+        id: "priorities",
+        type: "multi_select",
+        question: "Which priorities matter?",
+        options: [
+          { id: "speed", label: "Speed" },
+          { id: "quality", label: "Quality" },
+        ],
+      });
+    });
+
+    const continueButton = await screen.findByRole("button", { name: "Continue" });
+    fireEvent.click(screen.getByText("Speed"));
+    fireEvent.click(screen.getByTestId("planning-option-other"));
+    fireEvent.change(screen.getByTestId("planning-other-input"), {
+      target: { value: "  Preserve operator review  " },
+    });
+    expect(continueButton).toBeEnabled();
+    fireEvent.click(continueButton);
+
+    await waitFor(() => {
+      expect(mockRespondToMissionInterview).toHaveBeenCalledWith(
+        "mission-session-1",
+        { priorities: ["speed"], _other: "Preserve operator review" },
+        undefined,
+        expect.any(String),
+      );
+    });
+  });
+
   it("restores persisted goal from localStorage on open", () => {
     mockGetMissionGoal.mockReturnValue("Previous mission goal");
 
diff --git a/packages/dashboard/app/components/__tests__/PlanningModeModal.planning-flow.test.tsx b/packages/dashboard/app/components/__tests__/PlanningModeModal.planning-flow.test.tsx
index 9dea61cf79..a402186cb3 100644
--- a/packages/dashboard/app/components/__tests__/PlanningModeModal.planning-flow.test.tsx
+++ b/packages/dashboard/app/components/__tests__/PlanningModeModal.planning-flow.test.tsx
@@ -424,6 +424,206 @@ describe("PlanningModeModal", () => {
       );
     });
 
+    it("allows Other-only answers for single-select planning questions", async () => {
+      window.sessionStorage.setItem("fusion-tab-id", "tab-self");
+
+      render(
+        <PlanningModeModal
+          isOpen={true}
+          onClose={mockOnClose}
+          onTaskCreated={mockOnTaskCreated}
+          onTasksCreated={vi.fn()}
+          tasks={mockTasks}
+        />,
+      );
+
+      fireEvent.change(screen.getByPlaceholderText(/e.g., Build a user authentication/), {
+        target: { value: "Build auth system" },
+      });
+      fireEvent.click(screen.getByText("Start Planning"));
+
+      await waitFor(() => {
+        expect(screen.getByText("What is the scope?")).toBeDefined();
+      });
+
+      const continueButton = screen.getByRole("button", { name: "Continue" });
+      fireEvent.click(screen.getByTestId("planning-option-other"));
+      expect(continueButton).toBeDisabled();
+
+      const otherInput = screen.getByTestId("planning-other-input");
+      fireEvent.change(otherInput, { target: { value: "  Make this a design spike  " } });
+      expect(continueButton).toBeEnabled();
+      fireEvent.click(continueButton);
+
+      await waitFor(() => {
+        expect(mockRespondToPlanning).toHaveBeenCalledWith(
+          "session-123",
+          { _other: "Make this a design spike" },
+          undefined,
+          "tab-self",
+        );
+      });
+    });
+
+    it("clears stale Other text when switching back to a provided planning option", async () => {
+      window.sessionStorage.setItem("fusion-tab-id", "tab-self");
+
+      render(
+        <PlanningModeModal
+          isOpen={true}
+          onClose={mockOnClose}
+          onTaskCreated={mockOnTaskCreated}
+          onTasksCreated={vi.fn()}
+          tasks={mockTasks}
+        />,
+      );
+
+      fireEvent.change(screen.getByPlaceholderText(/e.g., Build a user authentication/), {
+        target: { value: "Build auth system" },
+      });
+      fireEvent.click(screen.getByText("Start Planning"));
+
+      await waitFor(() => {
+        expect(screen.getByText("What is the scope?")).toBeDefined();
+      });
+
+      const continueButton = screen.getByRole("button", { name: "Continue" });
+      fireEvent.click(screen.getByTestId("planning-option-other"));
+      fireEvent.change(screen.getByTestId("planning-other-input"), { target: { value: "   " } });
+      expect(continueButton).toBeDisabled();
+      fireEvent.change(screen.getByTestId("planning-other-input"), { target: { value: "Ignore suggested scope" } });
+      expect(continueButton).toBeEnabled();
+
+      fireEvent.click(screen.getByText("Small"));
+      expect(screen.queryByTestId("planning-other-input")).toBeNull();
+      fireEvent.click(continueButton);
+
+      await waitFor(() => {
+        expect(mockRespondToPlanning).toHaveBeenCalledWith(
+          "session-123",
+          { "q-scope": "small" },
+          undefined,
+          "tab-self",
+        );
+      });
+    });
+
+    it("allows Other-only answers for multi-select planning questions", async () => {
+      window.sessionStorage.setItem("fusion-tab-id", "tab-self");
+      mockConnectPlanningStream.mockImplementationOnce((_sessionId: string, _projectId: string | undefined, handlers: any) => {
+        setTimeout(() => {
+          handlers.onQuestion?.({
+            id: "q-priorities",
+            type: "multi_select",
+            question: "Which priorities matter?",
+            options: [
+              { id: "speed", label: "Speed" },
+              { id: "quality", label: "Quality" },
+            ],
+          });
+        }, 10);
+        return {
+          close: vi.fn(),
+          isConnected: vi.fn().mockReturnValue(true),
+        };
+      });
+
+      render(
+        <PlanningModeModal
+          isOpen={true}
+          onClose={mockOnClose}
+          onTaskCreated={mockOnTaskCreated}
+          onTasksCreated={vi.fn()}
+          tasks={mockTasks}
+        />,
+      );
+
+      fireEvent.change(screen.getByPlaceholderText(/e.g., Build a user authentication/), {
+        target: { value: "Build auth system" },
+      });
+      fireEvent.click(screen.getByText("Start Planning"));
+
+      await waitFor(() => {
+        expect(screen.getByText("Which priorities matter?")).toBeDefined();
+      });
+
+      const continueButton = screen.getByRole("button", { name: "Continue" });
+      fireEvent.click(screen.getByTestId("planning-option-other"));
+      expect(continueButton).toBeDisabled();
+
+      const otherInput = screen.getByTestId("planning-other-input");
+      fireEvent.change(otherInput, { target: { value: "  Challenge the premise  " } });
+      expect(continueButton).toBeEnabled();
+      fireEvent.click(continueButton);
+
+      await waitFor(() => {
+        expect(mockRespondToPlanning).toHaveBeenCalledWith(
+          "session-123",
+          { _other: "Challenge the premise" },
+          undefined,
+          "tab-self",
+        );
+      });
+    });
+
+    it("combines provided options with Other text for multi-select planning questions on mobile", async () => {
+      window.sessionStorage.setItem("fusion-tab-id", "tab-self");
+      mockViewport("mobile");
+      mockConnectPlanningStream.mockImplementationOnce((_sessionId: string, _projectId: string | undefined, handlers: any) => {
+        setTimeout(() => {
+          handlers.onQuestion?.({
+            id: "q-priorities",
+            type: "multi_select",
+            question: "Which priorities matter?",
+            options: [
+              { id: "speed", label: "Speed" },
+              { id: "quality", label: "Quality" },
+            ],
+          });
+        }, 10);
+        return {
+          close: vi.fn(),
+          isConnected: vi.fn().mockReturnValue(true),
+        };
+      });
+
+      render(
+        <PlanningModeModal
+          isOpen={true}
+          onClose={mockOnClose}
+          onTaskCreated={mockOnTaskCreated}
+          onTasksCreated={vi.fn()}
+          tasks={mockTasks}
+        />,
+      );
+
+      fireEvent.change(screen.getByPlaceholderText(/e.g., Build a user authentication/), {
+        target: { value: "Build auth system" },
+      });
+      fireEvent.click(screen.getByText("Start Planning"));
+
+      await waitFor(() => {
+        expect(screen.getByText("Which priorities matter?")).toBeDefined();
+      });
+
+      const continueButton = screen.getByRole("button", { name: "Continue" });
+      fireEvent.click(screen.getByText("Speed"));
+      fireEvent.click(screen.getByTestId("planning-option-other"));
+      const otherInput = screen.getByTestId("planning-other-input");
+      fireEvent.change(otherInput, { target: { value: "  Preserve operator control  " } });
+      expect(continueButton).toBeEnabled();
+      fireEvent.click(continueButton);
+
+      await waitFor(() => {
+        expect(mockRespondToPlanning).toHaveBeenCalledWith(
+          "session-123",
+          { "q-priorities": ["speed"], _other: "Preserve operator control" },
+          undefined,
+          "tab-self",
+        );
+      });
+    });
+
     it("shows stop action in loading and stops generation", async () => {
       let streamHandlers: any;
       const closeSpy = vi.fn();
diff --git a/packages/dashboard/src/__tests__/milestone-slice-interview.test.ts b/packages/dashboard/src/__tests__/milestone-slice-interview.test.ts
index be8c41b089..d191d05c8b 100644
--- a/packages/dashboard/src/__tests__/milestone-slice-interview.test.ts
+++ b/packages/dashboard/src/__tests__/milestone-slice-interview.test.ts
@@ -8,6 +8,7 @@ const { mockCreateFnAgent } = vi.hoisted(() => ({
 
 vi.mock("@fusion/engine", () => ({
   listCliAdapterDescriptors: () => [],
+  resolveMcpServersForStore: async () => ({ servers: [] }),
   buildSessionSkillContextSync: (_agent: unknown, sessionPurpose: string, projectRootDir: string, pluginRunner?: { getPluginSkills?: () => Array<{ pluginId: string; skill: { name: string; enabled?: boolean } }> }) => {
     const requestedSkillNames = ["fusion"];
     for (const contribution of pluginRunner?.getPluginSkills?.() ?? []) {
@@ -51,6 +52,8 @@ import {
   SLICE_INTERVIEW_SYSTEM_PROMPT,
   stopMilestoneSliceInterviewGeneration,
   GENERATION_TIMEOUT_MS,
+  formatInterviewHistory,
+  formatResponseForAgent,
   type MilestoneInterviewSummary,
   type SliceInterviewSummary,
 } from "../milestone-slice-interview.js";
@@ -77,6 +80,50 @@ function createQuestionJson(id = "q-1"): string {
   });
 }
 
+describe("milestone/slice interview formatter Other answers", () => {
+  const singleSelectQuestion = {
+    id: "scope",
+    type: "single_select" as const,
+    question: "What scope should this slice use?",
+    options: [
+      { id: "mvp", label: "MVP" },
+      { id: "full", label: "Full launch" },
+    ],
+  };
+
+  const multiSelectQuestion = {
+    id: "priorities",
+    type: "multi_select" as const,
+    question: "Which priorities matter?",
+    options: [
+      { id: "speed", label: "Speed" },
+      { id: "quality", label: "Quality" },
+    ],
+  };
+
+  it("formats Other-only single-select answers for the target interview agent and history replay", () => {
+    const response = { _other: "Split this by rollout risk" };
+
+    expect(formatResponseForAgent(singleSelectQuestion, response)).toContain(
+      "Selected: Split this by rollout risk (user's own answer)",
+    );
+    expect(formatInterviewHistory([{ question: singleSelectQuestion, response }])).toContain(
+      "A: Split this by rollout risk (user's own answer)",
+    );
+  });
+
+  it("appends Other text to multi-select answers for the target interview agent and history replay", () => {
+    const response = { priorities: ["speed"], _other: "Keep QA manual" };
+
+    expect(formatResponseForAgent(multiSelectQuestion, response)).toContain(
+      "Selected: Speed, Keep QA manual (user's own answer)",
+    );
+    expect(formatInterviewHistory([{ question: multiSelectQuestion, response }])).toContain(
+      "A: Speed, Keep QA manual (user's own answer)",
+    );
+  });
+});
+
 function createMilestoneCompleteJson(): string {
   return JSON.stringify({
     type: "complete",
@@ -315,7 +362,7 @@ describe("milestone-slice-interview module", () => {
       const session = getTargetInterviewSession(sessionId);
       expect(session).toBeDefined();
       expect(session?.targetType).toBe("milestone");
-      const createFnAgentCallArg = mockCreateFnAgent.mock.calls.at(-1)?.[0] as { customTools?: Array<{ name: string }> };
+      const createFnAgentCallArg = await waitForCreateFnAgentOptions() as { customTools?: Array<{ name: string }> };
       const customToolNames = createFnAgentCallArg.customTools?.map((tool) => tool.name) ?? [];
       expect(customToolNames).toContain("fn_task_list");
       expect(customToolNames).toContain("fn_task_get");
diff --git a/packages/dashboard/src/__tests__/mission-interview.test.ts b/packages/dashboard/src/__tests__/mission-interview.test.ts
index 108ca135f5..02c2f40947 100644
--- a/packages/dashboard/src/__tests__/mission-interview.test.ts
+++ b/packages/dashboard/src/__tests__/mission-interview.test.ts
@@ -8,6 +8,7 @@ const { mockCreateFnAgent } = vi.hoisted(() => ({
 
 vi.mock("@fusion/engine", () => ({
   listCliAdapterDescriptors: () => [],
+  resolveMcpServersForStore: async () => ({ servers: [] }),
   buildSessionSkillContextSync: (_agent: unknown, sessionPurpose: string, projectRootDir: string, pluginRunner?: { getPluginSkills?: () => Array<{ pluginId: string; skill: { name: string; enabled?: boolean } }> }) => {
     const requestedSkillNames = ["fusion"];
     for (const contribution of pluginRunner?.getPluginSkills?.() ?? []) {
@@ -46,6 +47,8 @@ import {
   stopMissionInterviewGeneration,
   submitMissionInterviewResponse,
   GENERATION_TIMEOUT_MS,
+  formatMissionInterviewHistory,
+  formatResponseForAgent,
 } from "../mission-interview.js";
 import {
   setDiagnosticsSink,
@@ -75,6 +78,50 @@ function createQuestionJson(id = "q-1"): string {
   });
 }
 
+describe("mission interview formatter Other answers", () => {
+  const singleSelectQuestion = {
+    id: "scope",
+    type: "single_select" as const,
+    question: "What scope should this mission use?",
+    options: [
+      { id: "mvp", label: "MVP" },
+      { id: "full", label: "Full launch" },
+    ],
+  };
+
+  const multiSelectQuestion = {
+    id: "priorities",
+    type: "multi_select" as const,
+    question: "Which priorities matter?",
+    options: [
+      { id: "speed", label: "Speed" },
+      { id: "quality", label: "Quality" },
+    ],
+  };
+
+  it("formats Other-only single-select answers for the mission agent and history replay", () => {
+    const response = { _other: "Interview stakeholders first" };
+
+    expect(formatResponseForAgent(singleSelectQuestion, response)).toContain(
+      "Selected: Interview stakeholders first (user's own answer)",
+    );
+    expect(formatMissionInterviewHistory([{ question: singleSelectQuestion, response }])).toContain(
+      "A: Interview stakeholders first (user's own answer)",
+    );
+  });
+
+  it("appends Other text to multi-select answers for the mission agent and history replay", () => {
+    const response = { priorities: ["quality"], _other: "Keep launch reversible" };
+
+    expect(formatResponseForAgent(multiSelectQuestion, response)).toContain(
+      "Selected: Quality, Keep launch reversible (user's own answer)",
+    );
+    expect(formatMissionInterviewHistory([{ question: multiSelectQuestion, response }])).toContain(
+      "A: Quality, Keep launch reversible (user's own answer)",
+    );
+  });
+});
+
 function createCompleteJson(): string {
   return JSON.stringify({
     type: "complete",
diff --git a/packages/dashboard/src/__tests__/planning-interview-formatters.test.ts b/packages/dashboard/src/__tests__/planning-interview-formatters.test.ts
new file mode 100644
index 0000000000..d5668ae0e3
--- /dev/null
+++ b/packages/dashboard/src/__tests__/planning-interview-formatters.test.ts
@@ -0,0 +1,47 @@
+import { describe, expect, it } from "vitest";
+import type { PlanningQuestion } from "@fusion/core";
+import { formatInterviewQA, formatResponseForAgent } from "../planning";
+
+const singleSelectQuestion: PlanningQuestion = {
+  id: "scope",
+  type: "single_select",
+  question: "What scope should we plan?",
+  options: [
+    { id: "mvp", label: "MVP" },
+    { id: "full", label: "Full launch" },
+  ],
+};
+
+const multiSelectQuestion: PlanningQuestion = {
+  id: "priorities",
+  type: "multi_select",
+  question: "Which priorities matter?",
+  options: [
+    { id: "speed", label: "Speed" },
+    { id: "quality", label: "Quality" },
+  ],
+};
+
+describe("planning interview formatter Other answers", () => {
+  it("formats Other-only single-select answers for the planning agent and Q&A history", () => {
+    const response = { _other: "Run discovery first" };
+
+    expect(formatResponseForAgent(singleSelectQuestion, response)).toContain(
+      "Selected: Run discovery first (user's own answer)",
+    );
+    expect(formatInterviewQA([{ question: singleSelectQuestion, response }])).toContain(
+      "A: Run discovery first (user's own answer)",
+    );
+  });
+
+  it("appends Other text to multi-select option labels for the planning agent and Q&A history", () => {
+    const response = { priorities: ["speed"], _other: "Keep humans in review" };
+
+    expect(formatResponseForAgent(multiSelectQuestion, response)).toContain(
+      "Selected: Speed, Keep humans in review (user's own answer)",
+    );
+    expect(formatInterviewQA([{ question: multiSelectQuestion, response }])).toContain(
+      "A: Speed, Keep humans in review (user's own answer)",
+    );
+  });
+});
diff --git a/packages/dashboard/src/milestone-slice-interview.ts b/packages/dashboard/src/milestone-slice-interview.ts
index 2bff22c840..313da4e026 100644
--- a/packages/dashboard/src/milestone-slice-interview.ts
+++ b/packages/dashboard/src/milestone-slice-interview.ts
@@ -653,12 +653,13 @@ export function getRateLimitResetTime(ip: string): Date | null {
 /**
  * Format user response as a message for the AI agent.
  */
-function formatResponseForAgent(
+export function formatResponseForAgent(
   question: PlanningQuestion,
   responses: Record<string, unknown>
 ): string {
   const responseValue = responses[question.id];
   const comment = typeof responses._comment === "string" ? responses._comment.trim() : "";
+  const other = typeof responses._other === "string" ? responses._other.trim() : "";
 
   let formatted: string;
 
@@ -667,6 +668,14 @@ function formatResponseForAgent(
       formatted = `Question: ${question.question}\n\nAnswer: ${responseValue}`;
       break;
     case "single_select":
+      /*
+      FNXC:PlanningInterview 2026-06-26-00:00:
+      GitHub #1794 requires milestone/slice Other-only single-select answers to reach the agent as the user's own answer rather than an undefined fallback or unwanted provided option.
+      */
+      if (other.length > 0) {
+        formatted = `Question: ${question.question}\n\nSelected: ${other} (user's own answer)`;
+        break;
+      }
       if (typeof responseValue === "string") {
         const option = question.options?.find((o) => o.id === responseValue);
         formatted = `Question: ${question.question}\n\nSelected: ${option?.label || responseValue}`;
@@ -675,11 +684,18 @@ function formatResponseForAgent(
       formatted = `Question: ${question.question}\n\nAnswer: ${responseValue}`;
       break;
     case "multi_select":
-      if (Array.isArray(responseValue)) {
-        const selected = responseValue.map((id) => {
+      if (Array.isArray(responseValue) || other.length > 0) {
+        const selected = Array.isArray(responseValue) ? responseValue.map((id) => {
           const option = question.options?.find((o) => o.id === id);
           return option?.label || id;
-        });
+        }) : [];
+        /*
+        FNXC:PlanningInterview 2026-06-26-00:00:
+        Milestone/slice multi-select Other answers are additive context; append the free-text answer to selected labels and keep Other-only payloads explicit for the agent.
+        */
+        if (other.length > 0) {
+          selected.push(`${other} (user's own answer)`);
+        }
         formatted = `Question: ${question.question}\n\nSelected: ${selected.join(", ")}`;
         break;
       }
@@ -767,7 +783,41 @@ export async function createTargetInterviewAgent(
   });
 }
 
-function formatInterviewHistory(
+function formatTargetInterviewHistoryAnswer(question: PlanningQuestion, responseValue: unknown, other: string): string {
+  switch (question.type) {
+    case "single_select": {
+      if (other.length > 0) {
+        return `${other} (user's own answer)`;
+      }
+      if (typeof responseValue === "string") {
+        const option = question.options?.find((candidate) => candidate.id === responseValue);
+        return option?.label || responseValue;
+      }
+      return String(responseValue ?? "");
+    }
+    case "multi_select": {
+      const selected = Array.isArray(responseValue) ? responseValue.map((id) => {
+        if (typeof id !== "string") {
+          return String(id);
+        }
+        const option = question.options?.find((candidate) => candidate.id === id);
+        return option?.label || id;
+      }) : [];
+      if (other.length > 0) {
+        selected.push(`${other} (user's own answer)`);
+      }
+      return selected.length > 0 ? selected.join(", ") : String(responseValue ?? "");
+    }
+    case "confirm":
+      return responseValue === true ? "Yes" : "No";
+    case "text":
+      return typeof responseValue === "string" ? responseValue : String(responseValue ?? "");
+    default:
+      return JSON.stringify(responseValue ?? null);
+  }
+}
+
+export function formatInterviewHistory(
   history: Array<{ question: PlanningQuestion; response: unknown }>,
 ): string {
   if (history.length === 0) {
@@ -782,10 +832,11 @@ function formatInterviewHistory(
           : undefined;
       const responseValue = responseRecord ? responseRecord[question.id] : response;
       const comment = typeof responseRecord?._comment === "string" ? responseRecord._comment.trim() : "";
+      const other = typeof responseRecord?._other === "string" ? responseRecord._other.trim() : "";
 
       const lines = [
         `Q: ${question.question}`,
-        `A: ${typeof responseValue === "string" ? responseValue : JSON.stringify(responseValue ?? null)}`,
+        `A: ${formatTargetInterviewHistoryAnswer(question, responseValue, other)}`,
       ];
 
       if (comment.length > 0) {
diff --git a/packages/dashboard/src/mission-interview.ts b/packages/dashboard/src/mission-interview.ts
index 2f14729c2a..864a866241 100644
--- a/packages/dashboard/src/mission-interview.ts
+++ b/packages/dashboard/src/mission-interview.ts
@@ -738,12 +738,13 @@ export function parseMissionAgentResponse(text: string): MissionInterviewRespons
 /**
  * Format user response as a message for the AI agent.
  */
-function formatResponseForAgent(
+export function formatResponseForAgent(
   question: PlanningQuestion,
   responses: Record<string, unknown>
 ): string {
   const responseValue = responses[question.id];
   const comment = typeof responses._comment === "string" ? responses._comment.trim() : "";
+  const other = typeof responses._other === "string" ? responses._other.trim() : "";
 
   let formatted: string;
 
@@ -752,6 +753,14 @@ function formatResponseForAgent(
       formatted = `Question: ${question.question}\n\nAnswer: ${responseValue}`;
       break;
     case "single_select":
+      /*
+      FNXC:PlanningInterview 2026-06-26-00:00:
+      GitHub #1794 requires mission Other-only single-select answers to reach the agent as the user's own answer rather than an undefined fallback or unwanted provided option.
+      */
+      if (other.length > 0) {
+        formatted = `Question: ${question.question}\n\nSelected: ${other} (user's own answer)`;
+        break;
+      }
       if (typeof responseValue === "string") {
         const option = question.options?.find((o) => o.id === responseValue);
         formatted = `Question: ${question.question}\n\nSelected: ${option?.label || responseValue}`;
@@ -760,11 +769,18 @@ function formatResponseForAgent(
       formatted = `Question: ${question.question}\n\nAnswer: ${responseValue}`;
       break;
     case "multi_select":
-      if (Array.isArray(responseValue)) {
-        const selected = responseValue.map((id) => {
+      if (Array.isArray(responseValue) || other.length > 0) {
+        const selected = Array.isArray(responseValue) ? responseValue.map((id) => {
           const option = question.options?.find((o) => o.id === id);
           return option?.label || id;
-        });
+        }) : [];
+        /*
+        FNXC:PlanningInterview 2026-06-26-00:00:
+        Mission multi-select Other answers are additive context; append the free-text answer to selected labels and keep Other-only payloads explicit for the agent.
+        */
+        if (other.length > 0) {
+          selected.push(`${other} (user's own answer)`);
+        }
         formatted = `Question: ${question.question}\n\nSelected: ${selected.join(", ")}`;
         break;
       }
@@ -892,7 +908,41 @@ export async function createMissionInterviewAgent(
   });
 }
 
-function formatMissionInterviewHistory(
+function formatMissionHistoryAnswer(question: PlanningQuestion, responseValue: unknown, other: string): string {
+  switch (question.type) {
+    case "single_select": {
+      if (other.length > 0) {
+        return `${other} (user's own answer)`;
+      }
+      if (typeof responseValue === "string") {
+        const option = question.options?.find((candidate) => candidate.id === responseValue);
+        return option?.label || responseValue;
+      }
+      return String(responseValue ?? "");
+    }
+    case "multi_select": {
+      const selected = Array.isArray(responseValue) ? responseValue.map((id) => {
+        if (typeof id !== "string") {
+          return String(id);
+        }
+        const option = question.options?.find((candidate) => candidate.id === id);
+        return option?.label || id;
+      }) : [];
+      if (other.length > 0) {
+        selected.push(`${other} (user's own answer)`);
+      }
+      return selected.length > 0 ? selected.join(", ") : String(responseValue ?? "");
+    }
+    case "confirm":
+      return responseValue === true ? "Yes" : "No";
+    case "text":
+      return typeof responseValue === "string" ? responseValue : String(responseValue ?? "");
+    default:
+      return JSON.stringify(responseValue ?? null);
+  }
+}
+
+export function formatMissionInterviewHistory(
   history: Array<{ question: PlanningQuestion; response: unknown }>,
 ): string {
   if (history.length === 0) {
@@ -907,10 +957,11 @@ function formatMissionInterviewHistory(
           : undefined;
       const responseValue = responseRecord ? responseRecord[question.id] : response;
       const comment = typeof responseRecord?._comment === "string" ? responseRecord._comment.trim() : "";
+      const other = typeof responseRecord?._other === "string" ? responseRecord._other.trim() : "";
 
       const lines = [
         `Q: ${question.question}`,
-        `A: ${typeof responseValue === "string" ? responseValue : JSON.stringify(responseValue ?? null)}`,
+        `A: ${formatMissionHistoryAnswer(question, responseValue, other)}`,
       ];
 
       if (comment.length > 0) {
diff --git a/packages/dashboard/src/planning.ts b/packages/dashboard/src/planning.ts
index 3912abaa8f..d246c60b3f 100644
--- a/packages/dashboard/src/planning.ts
+++ b/packages/dashboard/src/planning.ts
@@ -2421,12 +2421,13 @@ export function stopGeneration(sessionId: string): boolean {
 /**
  * Format user response as a message for the AI agent.
  */
-function formatResponseForAgent(
+export function formatResponseForAgent(
   question: PlanningQuestion,
   responses: Record<string, unknown>
 ): string {
   const responseValue = responses[question.id];
   const comment = typeof responses._comment === "string" ? responses._comment.trim() : "";
+  const other = typeof responses._other === "string" ? responses._other.trim() : "";
 
   let formatted: string;
 
@@ -2436,6 +2437,14 @@ function formatResponseForAgent(
       break;
 
     case "single_select":
+      /*
+      FNXC:PlanningInterview 2026-06-26-00:00:
+      GitHub #1794 requires Other-only single-select answers to reach the planning agent as the user's own answer instead of forcing a provided option id or rendering an undefined fallback.
+      */
+      if (other.length > 0) {
+        formatted = `Question: ${question.question}\n\nSelected: ${other} (user's own answer)`;
+        break;
+      }
       if (typeof responseValue === "string") {
         const option = question.options?.find((o) => o.id === responseValue);
         formatted = `Question: ${question.question}\n\nSelected: ${option?.label || responseValue}`;
@@ -2445,11 +2454,18 @@ function formatResponseForAgent(
       break;
 
     case "multi_select":
-      if (Array.isArray(responseValue)) {
-        const selected = responseValue.map((id) => {
+      if (Array.isArray(responseValue) || other.length > 0) {
+        const selected = Array.isArray(responseValue) ? responseValue.map((id) => {
           const option = question.options?.find((o) => o.id === id);
           return option?.label || id;
-        });
+        }) : [];
+        /*
+        FNXC:PlanningInterview 2026-06-26-00:00:
+        Multi-select Other answers are additive agent context; append the free-text answer to the selected list and keep Other-only payloads from collapsing to a blank/undefined answer.
+        */
+        if (other.length > 0) {
+          selected.push(`${other} (user's own answer)`);
+        }
         formatted = `Question: ${question.question}\n\nSelected: ${selected.join(", ")}`;
         break;
       }
@@ -2493,30 +2509,34 @@ function disposeSessionAgentForRetry(session: Session): void {
   session.agent = undefined;
 }
 
-function formatInterviewAnswer(question: PlanningQuestion, responseValue: unknown): string {
+function formatInterviewAnswer(question: PlanningQuestion, responseValue: unknown, other = ""): string {
   switch (question.type) {
     case "text":
       return typeof responseValue === "string" ? responseValue : String(responseValue ?? "");
 
     case "single_select":
+      if (other.length > 0) {
+        return `${other} (user's own answer)`;
+      }
       if (typeof responseValue === "string") {
         const option = question.options?.find((candidate) => candidate.id === responseValue);
         return option?.label || responseValue;
       }
       return String(responseValue ?? "");
 
-    case "multi_select":
-      if (Array.isArray(responseValue)) {
-        const selected = responseValue.map((id) => {
-          if (typeof id !== "string") {
-            return String(id);
-          }
-          const option = question.options?.find((candidate) => candidate.id === id);
-          return option?.label || id;
-        });
-        return selected.join(", ");
+    case "multi_select": {
+      const selected = Array.isArray(responseValue) ? responseValue.map((id) => {
+        if (typeof id !== "string") {
+          return String(id);
+        }
+        const option = question.options?.find((candidate) => candidate.id === id);
+        return option?.label || id;
+      }) : [];
+      if (other.length > 0) {
+        selected.push(`${other} (user's own answer)`);
       }
-      return String(responseValue ?? "");
+      return selected.length > 0 ? selected.join(", ") : String(responseValue ?? "");
+    }
 
     case "confirm":
       return responseValue === true ? "Yes" : "No";
@@ -2543,8 +2563,9 @@ export function formatInterviewQA(
         : undefined;
     const responseValue = responseRecord ? responseRecord[question.id] : response;
     const comment = typeof responseRecord?._comment === "string" ? responseRecord._comment.trim() : "";
+    const other = typeof responseRecord?._other === "string" ? responseRecord._other.trim() : "";
 
-    const answerLine = `**Q: ${question.question}**\nA: ${formatInterviewAnswer(question, responseValue)}`;
+    const answerLine = `**Q: ${question.question}**\nA: ${formatInterviewAnswer(question, responseValue, other)}`;
     return comment.length > 0 ? `${answerLine}\nComment: ${comment}` : answerLine;
   });