{"custom_id": "req-1", "method": "POST", "url": "/v1/chat/completions", "body": {"model": "openai/gpt-4o-mini", "messages": [{"role": "user", "content": "Say hello"}]}}
{"custom_id": "req-2", "method": "POST", "url": "/v1/chat/completions", "body": {"model": "openai/gpt-4o-mini", "messages": [{"role": "user", "content": "Say goodbye"}]}}