Final Brief Input Token Count

{
  "causal": false,
  "event_id": "evt_c79db4e31efe16cd44342e6c",
  "kind": "FinalBriefInputTokenCount",
  "payload": {
    "call_id": "final-brief-call_425042cd88468ea1e002be64",
    "counter_id": "anthropic-messages-direct-v0.2",
    "input_tokens": 8910,
    "request_hash": "a85bb748babd1f16dec4f2b5108e714ac8e2a4253cd5bcdbaf11a70e74d1060f"
  },
  "phase": "collect_final_briefs",
  "run_id": "run9",
  "schema_version": "0.1",
  "sequence": 2931,
  "tick": 21
}