UsageResponse

{
  "report": {
    "chat_id": "00000000-0000-4000-8000-000000000000",
    "current_chat": {
      "attempts": 0,
      "attempts_with_reported_usage": 0,
      "request_payload_bytes": 0,
      "web_search_calls": 0,
      "context_payload_bytes": 0,
      "message_count": 0,
      "context_document_count": 0,
      "context_message_block_count": 0,
      "prompt_tokens": 0,
      "cached_prompt_tokens": 0,
      "completion_tokens": 0,
      "reasoning_tokens": 0,
      "total_tokens": 0,
      "average_context_assembly_ms": 0,
      "average_provider_start_ms": 0,
      "average_time_to_first_token_ms": 0,
      "average_generation_ms": 0,
      "average_total_ms": 0,
      "good_feedback": 0,
      "bad_feedback": 0
    },
    "groups": [
      {
        "utc_day": "string",
        "surface": "standalone",
        "provider": "string",
        "model": "string",
        "reasoning": "default",
        "status": "pending",
        "prompt_template_version": "string",
        "totals": {
          "attempts": 0,
          "attempts_with_reported_usage": 0,
          "request_payload_bytes": 0,
          "web_search_calls": 0,
          "context_payload_bytes": 0,
          "message_count": 0,
          "context_document_count": 0,
          "context_message_block_count": 0,
          "prompt_tokens": 0,
          "cached_prompt_tokens": 0,
          "completion_tokens": 0,
          "reasoning_tokens": 0,
          "total_tokens": 0,
          "average_context_assembly_ms": 0,
          "average_provider_start_ms": 0,
          "average_time_to_first_token_ms": 0,
          "average_generation_ms": 0,
          "average_total_ms": 0,
          "good_feedback": 0,
          "bad_feedback": 0
        }
      }
    ]
  }
}