=== messages-none ===
--- INPUT  (POST messages, request.json) ---
{
  "model": "zai-org/GLM-5.3",
  "temperature": 0,
  "messages": [
    {
      "role": "user",
      "content": "Reply with exactly OK."
    }
  ],
  "max_tokens": 4096,
  "output_config": {
    "effort": "none"
  }
}

--- OUTPUT (HTTP 200, 0.7 s, pass=True) ---
{"id":"msg_f14de436c51f40d4ae477ee3e4bab68b","type":"message","role":"assistant","content":[{"type":"text","text":"OK"}],"model":"zai-org/GLM-5.3","stop_reason":"end_turn","stop_sequence":null,"usage":{"input_tokens":11,"output_tokens":2,"cache_read_input_tokens":0}}