{
  "model": "openai/gpt-4o-mini",
  "arm": "a",
  "question": "What does the router's ServeHTTP method do, and where is it defined?",
  "wall_s": 3.99,
  "steps": 4,
  "tool_calls": {
    "run_shell": 4,
    "ctx_optimize": 0,
    "graphify": 0
  },
  "tokens": {
    "prompt": 3857,
    "completion": 152,
    "total": 4009
  },
  "cost_usd": 0.000663,
  "answer": "The `ServeHTTP` method of the router is defined in `mux.go` at line 188. It dispatches the handler registered in the matched route."
}