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      "generation_ms": 176.06010008603334,
      "mean_inter_token_latency_ms": 5.501878127688542,
      "mean_time_per_output_token_ms": 5.501878127688542,
      "output_token_source": "usage",
      "output_tokens": 33,
      "planned_context_tokens": 2048,
      "prompt_tokens": 1756,
      "reasoning_chunks": 0,
      "request_canary": null,
      "request_index": 10,
      "time_to_first_output_ms": 270.3987999120727,
      "tpot_ms": 5.501878127688542,
      "ttft_ms": 270.39929991587996,
      "visible_content_truncated": false,
      "visible_generation_ms": 176.0596000822261
    },
    {
      "content_chunks": 9,
      "controlled_output": {
        "capture_complete": true,
        "exact_adherence": true,
        "observed_code_words": 32,
        "observed_extra_words": 0,
        "passed": true,
        "policy": "strict",
        "requested_words": 32
      },
      "decode_tok_s": 181.82159102206356,
      "e2e_ms": 447.3252999596298,
      "effective_prefill_tok_s": 6471.857371298084,
      "generation_ms": 175.99669995252043,
      "mean_inter_token_latency_ms": 5.499896873516263,
      "mean_time_per_output_token_ms": 5.499896873516263,
      "output_token_source": "usage",
      "output_tokens": 33,
      "planned_context_tokens": 2048,
      "prompt_tokens": 1756,
      "reasoning_chunks": 0,
      "request_canary": null,
      "request_index": 11,
      "time_to_first_output_ms": 271.32860000710934,
      "tpot_ms": 5.499896873516263,
      "ttft_ms": 271.32940001320094,
      "visible_content_truncated": false,
      "visible_generation_ms": 175.99589994642884
    }
  ],
  "requests": 12,
  "response_words": 32,
  "responses_received": 12,
  "run_id": "benchmark-20260919T232906Z",
  "sampling": {
    "temperature": {
      "effective_request": 0.0,
      "requested": null,
      "sent": true
    },
    "top_p": {
      "effective_request": null,
      "requested": null,
      "sent": false
    }
  },
  "schema": "anvil-serving.benchmark/v1",
  "serve_flags": {
    "no_thinking": false,
    "reasoning_effort": null,
    "shared_prefix_burst": false,
    "thinking_mode": "unsupported"
  },
  "shared_prefix_tokens": 0,
  "source_recipe": null,
  "started_at": "2026-09-19T23:29:06Z",
  "started_at_unix_ns": 1789860546758603100,
  "tier": null,
  "timestamp_precision": "nanosecond-unix-fields; ISO labels are second precision",
  "timing_methodology": {
    "artifact_timestamps": "time.time_ns Unix timestamps; independent artifacts may align them only when the operator supplied the same explicit clock_domain_id",
    "clock": "client time.perf_counter",
    "controlled_output": "--response-words adherence is recorded; observe preserves historical behavior while strict rejects non-exact or truncated completions; visible response capture is capped at 8192 characters",
    "decode": "usage completion tokens after the first token divided by client-observed generation time; completion tokens may include reasoning tokens",
    "distributions": "request-level mean, sample standard deviation, normal-approximation 95% confidence interval for the mean, min, p25, p50, p75, p90, p95, p99, and max using the nearest-rank percentile method",
    "effective_prefill": "usage.prompt_tokens divided by client-observed time to first output; includes queueing, scheduling, prefill, and first-token work",
    "generation": "client-observed E2E minus time to first output",
    "mean_inter_token_latency": "legacy key for a TPOT proxy: client-observed generation time divided by completion tokens after the first token; not raw per-token ITL",
    "p99": "numeric nearest-rank p99 is always retained for compatibility; it is descriptive only below 100 eligible samples",
    "request_canaries": "when enabled, each response must begin with its own synthetic marker and contain no other ANVIL_REQ marker; bounded/truncated captures fail closed and are excluded from performance metrics",
    "time_to_first_output": "request start through the first non-empty streamed reasoning or content delta",
    "tpot": "client-observed mean time per output token after the first output; identical to the legacy mean_inter_token_latency key",
    "ttft": "request start through the first non-empty streamed content delta"
  },
  "wall_clock_ms": 5567.395200021565
}