feat(ai): add Claude Opus 4.6 and GPT-5.3 Codex models

packages/ai/CHANGELOG.md

@@ -5,6 +5,7 @@
 ### Added
 
 - Added Claude Opus 4.6 model to the generated model catalog
+- Added GPT-5.3 Codex model to the generated model catalog (OpenAI Codex provider only)
 
 ## [0.51.6] - 2026-02-04
 

packages/ai/scripts/generate-models.ts

@@ -791,6 +791,18 @@ async function generateModels() {
 			contextWindow: CODEX_CONTEXT,
 			maxTokens: CODEX_MAX_TOKENS,
 		},
+		{
+			id: "gpt-5.3-codex",
+			name: "GPT-5.3 Codex",
+			api: "openai-codex-responses",
+			provider: "openai-codex",
+			baseUrl: CODEX_BASE_URL,
+			reasoning: true,
+			input: ["text", "image"],
+			cost: { input: 1.75, output: 14, cacheRead: 0.175, cacheWrite: 0 },
+			contextWindow: CODEX_CONTEXT,
+			maxTokens: CODEX_MAX_TOKENS,
+		},
 	];
 	allModels.push(...codexModels);
 

packages/coding-agent/CHANGELOG.md

@@ -13,6 +13,7 @@
 - API keys in `auth.json` now support shell command resolution (`!command`) and environment variable lookup, matching the behavior in `models.json`
 - Added `minimal-mode.ts` example extension demonstrating how to override built-in tool rendering for a minimal display mode
 - Added Claude Opus 4.6 model to the model catalog
+- Added GPT-5.3 Codex model to the model catalog (OpenAI Codex provider only)
 - Added SSH URL support for git packages ([#1287](https://github.com/badlogic/pi-mono/pull/1287) by [@markusn](https://github.com/markusn))
 - Model selectors now display the selected model name ([#1275](https://github.com/badlogic/pi-mono/pull/1275) by [@haoqixu](https://github.com/haoqixu))