=== responses-64-contract ===
--- INPUT  (POST responses, request.json) ---
{
  "model": "zai-org/GLM-5.3",
  "input": "Reply with exactly OK.",
  "max_output_tokens": 64
}

--- OUTPUT (HTTP 200, 0.8 s, pass=True) ---
{"background":false,"created_at":1792329988,"completed_at":1792329988,"id":"resp_96664466e95f475f866a7711b4350df6","max_output_tokens":64,"metadata":{},"model":"zai-org/GLM-5.3","object":"response","output":[{"type":"message","content":[{"type":"output_text","annotations":[],"logprobs":[],"text":"OK"}],"id":"msg_edfc491052f04ca2959882026bc82553","role":"assistant","status":"completed"}],"parallel_tool_calls":true,"reasoning":{"effort":"high"},"service_tier":"auto","status":"completed","temperature":1.0,"text":{"format":{"type":"text"}},"tool_choice":"auto","tools":[],"top_logprobs":0,"top_p":1.0,"truncation":"disabled","usage":{"input_tokens":17,"input_tokens_details":{"cached_tokens":0},"output_tokens":36,"output_tokens_details":{"reasoning_tokens":0},"total_tokens":53},"billing":null,"conversation":null,"error":null,"incomplete_details":null,"instructions":null,"max_tool_calls":null,"previous_response_id":null,"prompt":null,"prompt_cache_key":null,"prompt_cache_retention":null,"safety_identifier":null,"presence_penalty":0.0,"frequency_penalty":0.0,"store":false}