FN-6869: add Codex model pricing

Add explicit OpenAI Codex pricing so token analytics can estimate Codex run costs.

- Add openai-codex pricing entries for GPT-5 Codex variants and codex-mini-latest.
- Bump the pricing verification date and document why Codex keys must use the openai-codex provider.
- Cover Codex pricing and lookup behavior in model-pricing tests.
- Add a changeset for the published Fusion package.

Files changed:
 .changeset/fn-6869-codex-pricing.md               |  7 ++++
 packages/core/src/__tests__/model-pricing.test.ts | 37 ++++++++++++++++++-
 packages/core/src/model-pricing.ts                | 44 ++++++++++++++++++++++-
 3 files changed, 86 insertions(+), 2 deletions(-)

Fusion-Task-Id: FN-6869
Fusion-Task-Lineage: 4bf119db-0401-4b18-b389-4a762e665cfc

.changeset/fn-6869-codex-pricing.md

@@ -0,0 +1,7 @@
+---
+"@runfusion/fusion": minor
+---
+
+Add pricing entries for OpenAI Codex models used through the `openai-codex` provider, so Command Center token analytics can estimate costs for Codex runs instead of showing them as unavailable.
+
+This is marked minor because it expands the set of priced models surfaced by the published CLI/dashboard without changing existing pricing behavior.

packages/core/src/__tests__/model-pricing.test.ts

@@ -34,6 +34,34 @@ describe("model-pricing", () => {
     expect(result.usd).toBeCloseTo(10.0, 2);
   });
 
+  it("prices OpenAI Codex GPT-5 models instead of reporting unavailable", () => {
+    // gpt-5-codex: input $1.25/1M, output $10/1M.
+    // 1,000,000 input + 200,000 output = 1.25 + 2.00 = 3.25
+    const result = costFor(
+      { ...ZERO, inputTokens: 1_000_000, outputTokens: 200_000 },
+      { provider: "openai-codex", model: "gpt-5-codex" },
+    );
+    expect(result.unavailable).toBe(false);
+    expect(result.usd).not.toBeNull();
+    expect(result.usd).toBeCloseTo(3.25, 2);
+  });
+
+  it("prices Codex mini latest instead of reporting unavailable", () => {
+    // codex-mini-latest: input $1.50/1M, output $6/1M, cached input $0.375/1M.
+    const result = costFor(
+      {
+        ...ZERO,
+        inputTokens: 1_000_000,
+        outputTokens: 500_000,
+        cachedTokens: 1_000_000,
+      },
+      { provider: "openai-codex", model: "codex-mini-latest" },
+    );
+    expect(result.unavailable).toBe(false);
+    expect(result.usd).not.toBeNull();
+    expect(result.usd).toBeCloseTo(4.875, 3);
+  });
+
   it("returns unavailable + null usd for an unknown model (never guesses)", () => {
     const result = costFor(
       { ...ZERO, inputTokens: 1_000_000 },
@@ -134,6 +162,12 @@ describe("model-pricing", () => {
       ).toBe(MODEL_PRICING["openai:gpt-4o"]);
     });
 
+    it("resolves OpenAI Codex models by explicit provider:model keys", () => {
+      expect(
+        lookupPricing({ provider: " OpenAI-Codex ", model: " GPT-5-Codex " }),
+      ).toBe(MODEL_PRICING["openai-codex:gpt-5-codex"]);
+    });
+
     it("falls back to a bare model id when provider is unset", () => {
       expect(lookupPricing({ model: "gemini-2.5-pro" })).toBe(
         MODEL_PRICING["google:gemini-2.5-pro"],
@@ -147,12 +181,13 @@ describe("model-pricing", () => {
     });
   });
 
-  it("seeds Anthropic, OpenAI, and Google providers", () => {
+  it("seeds Anthropic, OpenAI Codex, OpenAI, and Google providers", () => {
     const providers = new Set(
       Object.keys(MODEL_PRICING).map((k) => k.split(":")[0]),
     );
     expect(providers).toContain("anthropic");
     expect(providers).toContain("openai");
+    expect(providers).toContain("openai-codex");
     expect(providers).toContain("google");
   });
 

packages/core/src/model-pricing.ts

@@ -25,7 +25,7 @@
  * The date the rates in {@link MODEL_PRICING} were last verified, ISO-8601.
  * Bump this whenever you edit a rate. Surfaced in the UI as "prices as of".
  */
-export const pricingAsOf = "2026-06-15";
+export const pricingAsOf = "2026-06-21";
 
 /**
  * Pricing entries older than this (relative to a caller-supplied `now`) are
@@ -233,6 +233,48 @@ export const MODEL_PRICING: Readonly<Record<string, ModelPricing>> = {
     source: "openai.com/api/pricing",
   },
 
+  // ── OpenAI Codex ────────────────────────────────────────────────────
+  // OpenAI has no separate cache-write charge → cacheWrite = input rate.
+  /*
+   * FNXC:CommandCenter 2026-06-21-12:14:
+   * Codex runs store the `openai-codex` provider, so pricing must be keyed as `openai-codex:<modelId>` instead of relying on the OpenAI provider or bare-model fallback. Keep these entries explicit so Command Center token cost does not show `unavailable`; rates mirror OpenAI GPT-5 Codex pricing, and `pricingAsOf` must be bumped on every rate edit.
+   */
+  "openai-codex:gpt-5-codex": {
+    inputPer1M: 1.25,
+    outputPer1M: 10,
+    cacheReadPer1M: 0.125,
+    cacheWritePer1M: 1.25,
+    source: "openai.com/api/pricing",
+  },
+  "openai-codex:gpt-5.1-codex": {
+    inputPer1M: 1.25,
+    outputPer1M: 10,
+    cacheReadPer1M: 0.125,
+    cacheWritePer1M: 1.25,
+    source: "openai.com/api/pricing",
+  },
+  "openai-codex:gpt-5.2-codex": {
+    inputPer1M: 1.25,
+    outputPer1M: 10,
+    cacheReadPer1M: 0.125,
+    cacheWritePer1M: 1.25,
+    source: "openai.com/api/pricing",
+  },
+  "openai-codex:gpt-5.3-codex": {
+    inputPer1M: 1.25,
+    outputPer1M: 10,
+    cacheReadPer1M: 0.125,
+    cacheWritePer1M: 1.25,
+    source: "openai.com/api/pricing",
+  },
+  "openai-codex:codex-mini-latest": {
+    inputPer1M: 1.5,
+    outputPer1M: 6,
+    cacheReadPer1M: 0.375,
+    cacheWritePer1M: 1.5,
+    source: "openai.com/api/pricing",
+  },
+
   // ── Google Gemini ───────────────────────────────────────────────────
   // No distinct cache-write token charge → cacheWrite = input rate.
   "google:gemini-2.5-pro": {