fix(parser): recognize raw json_schema response format in auto-parsing checks

src/lib/ResponsesParser.ts

@@ -142,7 +142,7 @@ function parseTextFormat<
 }
 
 export function hasAutoParseableInput(params: ResponseCreateParamsWithTools): boolean {
-  if (isAutoParsableResponseFormat(params.text?.format)) {
+  if (isAutoParsableResponseFormat(params.text?.format) || params.text?.format?.type === 'json_schema') {
     return true;
   }
 

src/lib/parser.ts

@@ -275,7 +275,10 @@ export function shouldParseToolCall(
 }
 
 export function hasAutoParseableInput(params: AnyChatCompletionCreateParams): boolean {
-  if (isAutoParsableResponseFormat(params.response_format)) {
+  if (
+    isAutoParsableResponseFormat(params.response_format) ||
+    params.response_format?.type === 'json_schema'
+  ) {
     return true;
   }
 

tests/lib/ResponsesParser.test.ts

@@ -139,4 +139,13 @@ describe('ResponsesParser', () => {
       parsed_arguments: { city: 'Paris' },
     });
   });
+
+  it('parses raw json_schema text format in maybeParseResponse', () => {
+    const response = maybeParseResponse(
+      makeResponse('completed', '{"size":"large","quality":"good"}'),
+      structuredTextParams,
+    );
+
+    expect(response.output_parsed).toEqual({ size: 'large', quality: 'good' });
+  });
 });

tests/lib/parser.test.ts

@@ -1,6 +1,7 @@
 import { z as z4 } from 'zod/v4';
 import { z as z3 } from 'zod/v3';
 import { zodResponseFormat } from 'openai/helpers/zod';
+import { maybeParseChatCompletion } from '../../src/lib/parser';
 import { makeSnapshotRequest } from '../utils/mock-snapshots';
 
 jest.setTimeout(1000 * 30);
@@ -1406,3 +1407,43 @@ describe.each([
     });
   });
 });
+
+describe('maybeParseChatCompletion', () => {
+  it('parses raw json_schema response_format', () => {
+    const rawCompletion = {
+      id: 'chatcmpl-123',
+      object: 'chat.completion' as const,
+      created: 1677652288,
+      model: 'gpt-4o-2024-08-06',
+      choices: [
+        {
+          index: 0,
+          finish_reason: 'stop' as const,
+          logprobs: null,
+          message: {
+            role: 'assistant' as const,
+            content: '{"city":"San Francisco","units":"c"}',
+            refusal: null,
+          },
+        },
+      ],
+    };
+
+    const parsed = maybeParseChatCompletion(rawCompletion, {
+      model: 'gpt-4o-2024-08-06',
+      messages: [{ role: 'user', content: 'hello' }],
+      response_format: {
+        type: 'json_schema',
+        json_schema: {
+          name: 'location',
+          schema: { type: 'object' },
+        },
+      },
+    });
+
+    expect(parsed.choices[0]?.message.parsed).toEqual({
+      city: 'San Francisco',
+      units: 'c',
+    });
+  });
+});