{"method": "measured", "tokens": {"input": 577843, "cached_input": 543675, "cache_write": 33940, "output": 2858, "total": 580701}, "attempt_output_tokens": 2270, "cost_usd": 0.9599, "responses": 9, "notes": "Claude Code per-message usage between this attempt's prompt and the next attempt's; cache writes are 1-hour."}