event: response.created
data: {"type":"response.created","response":{"id":"resp_FixtureResp001","object":"response","model":"gpt-4.1-mini","status":"in_progress"}}

event: response.output_text.delta
data: {"type":"response.output_text.delta","delta":"Hello"}

event: response.output_text.delta
data: {"type":"response.output_text.delta","delta":" from"}

event: response.output_text.delta
data: {"type":"response.output_text.delta","delta":" responses API"}

event: response.completed
data: {"type":"response.completed","response":{"id":"resp_FixtureResp001","object":"response","model":"gpt-4.1-mini","status":"completed","usage":{"input_tokens":56,"output_tokens":18,"total_tokens":74,"input_tokens_details":{"cached_tokens":24},"output_tokens_details":{"reasoning_tokens":0}}}}

