feat: add gpt-5.3-codex model to OpenAI Codex provider (#11225)

feat: add gpt-5.3-codex model and make it default for OpenAI Codex provider

Co-authored-by: Roo Code <[email protected]>

packages/types/src/providers/openai-codex.ts

@@ -16,7 +16,7 @@ import type { ModelInfo } from "../model.js"
 
 export type OpenAiCodexModelId = keyof typeof openAiCodexModels
 
-export const openAiCodexDefaultModelId: OpenAiCodexModelId = "gpt-5.2-codex"
+export const openAiCodexDefaultModelId: OpenAiCodexModelId = "gpt-5.3-codex"
 
 /**
  * Models available through the Codex OAuth flow.
@@ -54,6 +54,20 @@ export const openAiCodexModels = {
 		supportsTemperature: false,
 		description: "GPT-5.1 Codex: GPT-5.1 optimized for agentic coding via ChatGPT subscription",
 	},
+	"gpt-5.3-codex": {
+		maxTokens: 128000,
+		contextWindow: 400000,
+		includedTools: ["apply_patch"],
+		excludedTools: ["apply_diff", "write_to_file"],
+		supportsImages: true,
+		supportsPromptCache: true,
+		supportsReasoningEffort: ["low", "medium", "high", "xhigh"],
+		reasoningEffort: "medium",
+		inputPrice: 0,
+		outputPrice: 0,
+		supportsTemperature: false,
+		description: "GPT-5.3 Codex: OpenAI's flagship coding model via ChatGPT subscription",
+	},
 	"gpt-5.2-codex": {
 		maxTokens: 128000,
 		contextWindow: 400000,

src/api/providers/__tests__/openai-codex.spec.ts

@@ -20,7 +20,7 @@ describe("OpenAiCodexHandler.getModel", () => {
 		const handler = new OpenAiCodexHandler({ apiModelId: "not-a-real-model" })
 		const model = handler.getModel()
 
-		expect(model.id).toBe("gpt-5.2-codex")
+		expect(model.id).toBe("gpt-5.3-codex")
 		expect(model.info).toBeDefined()
 	})
 })