diff --git a/src/components/ConsoleOAuthFlow.tsx b/src/components/ConsoleOAuthFlow.tsx
index 236834401..1270f84e9 100644
--- a/src/components/ConsoleOAuthFlow.tsx
+++ b/src/components/ConsoleOAuthFlow.tsx
@@ -372,7 +372,7 @@ export function ConsoleOAuthFlow({
         CODEX_LOGIN_METHOD: 'chatgpt_subscription',
       }
       updateSettingsForSource('userSettings', {
-        modelType: 'openai-responses' as any,
+        modelType: 'codex',
         env,
       } as any)
       for (const [key, value] of Object.entries(env)) {
diff --git a/src/utils/settings/types.ts b/src/utils/settings/types.ts
index e7b0bbfb5..520cbd5ea 100644
--- a/src/utils/settings/types.ts
+++ b/src/utils/settings/types.ts
@@ -369,11 +369,11 @@ export const SettingsSchema = lazySchema(() =>
         .optional()
         .describe('Tool usage permissions configuration'),
       modelType: z
-        .enum(['anthropic', 'openai', 'gemini', 'grok'])
+        .enum(['anthropic', 'openai', 'gemini', 'grok', 'codex'])
         .optional()
         .describe(
-          'API provider type. "anthropic" uses the Anthropic API (default), "openai" uses the OpenAI Chat Completions API, "gemini" uses the Gemini API, and "grok" uses the xAI Grok API (OpenAI-compatible). ' +
-            'When set to "openai", configure OPENAI_API_KEY, OPENAI_BASE_URL, and OPENAI_MODEL. When set to "gemini", configure GEMINI_API_KEY and optional GEMINI_BASE_URL. When set to "grok", configure GROK_API_KEY (or XAI_API_KEY), optional GROK_BASE_URL, GROK_MODEL, and GROK_MODEL_MAP.',
+          'API provider type. "anthropic" uses the Anthropic API (default), "openai" uses the OpenAI Chat Completions API, "gemini" uses the Gemini API, "grok" uses the xAI Grok API (OpenAI-compatible), and "codex" uses the OpenAI Responses API via ChatGPT subscription or API key. ' +
+            'When set to "openai", configure OPENAI_API_KEY, OPENAI_BASE_URL, and OPENAI_MODEL. When set to "gemini", configure GEMINI_API_KEY and optional GEMINI_BASE_URL. When set to "grok", configure GROK_API_KEY (or XAI_API_KEY), optional GROK_BASE_URL, GROK_MODEL, and GROK_MODEL_MAP. When set to "codex", configure CODEX_API_KEY and optional CODEX_BASE_URL.',
         ),
       model: z
         .string()