diff --git a/packages/types/src/agent.ts b/packages/types/src/agent.ts
index 4ad597e..e94e5b1 100644
--- a/packages/types/src/agent.ts
+++ b/packages/types/src/agent.ts
@@ -239,6 +239,7 @@ export const PROVIDER_MODELS = {
   OPENAI: [
     { id: 'gpt-4.1-mini', name: 'GPT-4.1 Mini', contextWindow: 1000000 },
     { id: 'gpt-4.1', name: 'GPT-4.1', contextWindow: 1000000 },
+    { id: 'gpt-5.1-mini', name: 'GPT-5.1 Mini', contextWindow: 1000000 },
     { id: 'gpt-4o', name: 'GPT-4o', contextWindow: 128000 },
     { id: 'gpt-4o-mini', name: 'GPT-4o Mini', contextWindow: 128000 },
     { id: 'gpt-4-turbo', name: 'GPT-4 Turbo', contextWindow: 128000 },