Creates a chat completion JSONSchema response format object from the given Zod schema.

If this is passed to the .parse(), .stream() or .runTools() chat completion methods then the response message will contain a .parsed property that is the result of parsing the content with the given Zod object.

const completion = await client.beta.chat.completions.parse({
   model: 'gpt-4o-2024-08-06',
   messages: [
     { role: 'system', content: 'You are a helpful math tutor.' },
     { role: 'user', content: 'solve 8x + 31 = 2' },
   ],
   response_format: zodResponseFormat(
     z.object({
       steps: z.array(z.object({
         explanation: z.string(),
         answer: z.string(),
       })),
       final_answer: z.string(),
     }),
     'math_answer',
   ),
 });
 const message = completion.choices[0]?.message;
 if (message?.parsed) {
   console.log(message.parsed);
   console.log(message.parsed.final_answer);
}

This can be passed directly to the .create() method but will not result in any automatic parsing, you'll have to parse the response yourself.