fix(codex): add GPT-6 Sol/Luna capabilities and official pricing

Add explicit capability entries for gpt-6-sol and gpt-6-luna (vision,
reasoning, search, 272k context, 128k max output) and update GPT-6
pricing to OpenAI's official standard short-context rates.

open-sse/providers/capabilities.js

@@ -183,6 +183,8 @@ export const PROVIDER_CAPABILITIES = {
   },
   "codex": {
     "gpt-6-astra":               { vision: true, reasoning: true, search: true, thinkingFormat: "openai", contextWindow: 272000, maxOutput: 128000 },
+    "gpt-6-sol":                 { vision: true, reasoning: true, search: true, thinkingFormat: "openai", contextWindow: 272000, maxOutput: 128000 },
+    "gpt-6-luna":                { vision: true, reasoning: true, search: true, thinkingFormat: "openai", contextWindow: 272000, maxOutput: 128000 },
     "gpt-5.6-sol":               CODEX_GPT_56_SOL_CAPS,
     "gpt-5.6-sol-review":        CODEX_GPT_56_SOL_CAPS,
     "gpt-5.6-terra":             CODEX_GPT_56_DEFAULT_CAPS,

open-sse/providers/pricing.js

@@ -73,7 +73,11 @@ export const MODEL_PRICING = {
   "gpt-5.6-luna":                 { input: 1.00,  output: 6.00,  cached: 0.10,  reasoning: 6.00,   cache_creation: 1.00  },
   "gpt-5.6-terra":                { input: 2.50,  output: 15.00, cached: 0.25,  reasoning: 15.00,  cache_creation: 2.50  },
   "gpt-5.6-sol":                  { input: 5.00,  output: 30.00, cached: 0.50,  reasoning: 30.00,  cache_creation: 5.00  },
-  "gpt-6-astra":                  { input: 5.00,  output: 30.00, cached: 0.50,  reasoning: 30.00,  cache_creation: 5.00  },
+  // OpenAI Standard short-context pricing (developers.openai.com/api/docs/pricing).
+  // Long-context pricing is higher, but this table currently stores one rate per model.
+  "gpt-6-astra":                  { input: 10.00, output: 50.00, cached: 1.00,  reasoning: 50.00,  cache_creation: 12.50 },
+  "gpt-6-sol":                    { input: 2.00,  output: 10.00, cached: 0.20,  reasoning: 10.00,  cache_creation: 2.50  },
+  "gpt-6-luna":                   { input: 0.10,  output: 0.50,  cached: 0.01,  reasoning: 0.50,   cache_creation: 0.125 },
   "o1":                           { input: 15.00, output: 60.00, cached: 7.50,  reasoning: 90.00,  cache_creation: 15.00 },
   "o1-mini":                      { input: 3.00,  output: 12.00, cached: 1.50,  reasoning: 18.00,  cache_creation: 3.00  },
 

tests/unit/codex-gpt6-lite.test.js

@@ -3,6 +3,7 @@ import { afterEach, describe, expect, it, vi } from "vitest";
 import { CodexExecutor } from "../../open-sse/executors/codex.js";
 import { getModelsByProviderId } from "../../open-sse/config/providerModels.js";
 import { getCapabilitiesForModel } from "../../open-sse/providers/capabilities.js";
+import { getPricingForModel } from "../../open-sse/providers/pricing.js";
 import { getThinkingLevels } from "../../open-sse/providers/thinkingLevels.js";
 import * as proxyFetchModule from "../../open-sse/utils/proxyFetch.js";
 
@@ -17,12 +18,21 @@ describe("Codex GPT-6 Sol/Luna transport", () => {
     expect(getCapabilitiesForModel("codex", model)).toMatchObject({
       vision: true,
       reasoning: true,
+      search: true,
       thinkingFormat: "openai",
+      contextWindow: 272000,
+      maxOutput: 128000,
     });
     expect(getThinkingLevels("codex", model)).toEqual(["low", "medium", "high", "xhigh", "max"]);
     expect(getThinkingLevels("codex", `${model}(high)`)).toEqual(entry.thinkingLevels);
   });
 
+  it("uses official OpenAI Standard pricing for GPT-6", () => {
+    expect(getPricingForModel("codex", "gpt-6-astra")).toMatchObject({ input: 10, cached: 1, cache_creation: 12.5, output: 50 });
+    expect(getPricingForModel("codex", "gpt-6-sol")).toMatchObject({ input: 2, cached: 0.2, cache_creation: 2.5, output: 10 });
+    expect(getPricingForModel("codex", "gpt-6-luna")).toMatchObject({ input: 0.1, cached: 0.01, cache_creation: 0.125, output: 0.5 });
+  });
+
   it("keeps a native Responses Lite request intact", () => {
     const executor = new CodexExecutor();
     const input = [