=== chat-default ===
--- INPUT  (POST chat, request.json) ---
{
  "model": "zai-org/GLM-5.3",
  "messages": [
    {
      "role": "user",
      "content": "Reply with exactly OK."
    }
  ],
  "max_tokens": 512
}

--- OUTPUT (HTTP 200, 0.7 s, pass=True) ---
{"id":"1bd3def644474cad808c2d05aa429b70","choices":[{"index":0,"message":{"content":"OK","refusal":null,"role":"assistant","reasoning_content":"The user has asked me to reply with exactly \"OK.\" This is a straightforward request for a specific response format."},"finish_reason":"stop","logprobs":null}],"created":1792329965,"model":"zai-org/GLM-5.3","object":"chat.completion","usage":{"prompt_tokens":17,"completion_tokens":26,"total_tokens":43,"prompt_tokens_details":{"cached_tokens":0}}}