=== responses-512 ===
--- INPUT  (POST responses, request.json) ---
{
  "model": "zai-org/GLM-5.3",
  "input": "Reply with exactly OK.",
  "max_output_tokens": 512
}

--- OUTPUT (HTTP 200, 0.5 s, pass=True) ---
{"background":false,"created_at":1792329975,"completed_at":1792329975,"id":"resp_590c0004e5e84e1bb653d88ea05a47db","max_output_tokens":512,"metadata":{},"model":"zai-org/GLM-5.3","object":"response","output":[{"type":"message","content":[{"type":"output_text","annotations":[],"logprobs":[],"text":"OK"}],"id":"msg_3e6c6a98aa824f15817c58949ef537cf","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":14,"output_tokens_details":{"reasoning_tokens":0},"total_tokens":31},"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}