Final Brief Input Token Count

{
  "causal": false,
  "event_id": "evt_13860b6574c25baefaf1884f",
  "kind": "FinalBriefInputTokenCount",
  "payload": {
    "call_id": "final-brief-call_da618b34ee90714ce1a1d9ab",
    "counter_id": "anthropic-messages-direct-v0.2",
    "input_tokens": 11484,
    "request_hash": "9e270c756cc3068eb451496d69117bcd0cc4c092d76dd250af87286d0d8f7e2d"
  },
  "phase": "collect_final_briefs",
  "run_id": "run9",
  "schema_version": "0.1",
  "sequence": 3765,
  "tick": 26
}