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      "ttft_ms": 483.5804000031203,
      "visible_content_truncated": false,
      "visible_generation_ms": 2790.0963999854866
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    {
      "content_chunks": 44,
      "controlled_output": {
        "capture_complete": true,
        "exact_adherence": true,
        "observed_code_words": 32,
        "observed_extra_words": 0,
        "passed": true,
        "policy": "strict",
        "requested_words": 32
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      "decode_tok_s": 15.85527935215196,
      "e2e_ms": 3256.6190999932587,
      "effective_prefill_tok_s": 7652.8779184168725,
      "generation_ms": 2775.100900005782,
      "mean_inter_token_latency_ms": 63.07047500013141,
      "mean_time_per_output_token_ms": 63.07047500013141,
      "output_token_source": "usage",
      "output_tokens": 45,
      "planned_context_tokens": 4096,
      "prompt_tokens": 3685,
      "reasoning_chunks": 0,
      "request_canary": {
        "capture_complete": true,
        "foreign_marker_count": 0,
        "marker": "ANVIL_REQ_0_00095",
        "marker_at_start": true,
        "observed_marker_count": 1,
        "passed": true
      },
      "request_index": 95,
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      "visible_content_truncated": false,
      "visible_generation_ms": 2775.100400001975
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    {
      "content_chunks": 44,
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        "observed_extra_words": 0,
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        "requested_words": 32
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      "decode_tok_s": 15.554949148275751,
      "e2e_ms": 3310.6689999985974,
      "effective_prefill_tok_s": 7647.504405059936,
      "generation_ms": 2828.681699989829,
      "mean_inter_token_latency_ms": 64.2882204543143,
      "mean_time_per_output_token_ms": 64.2882204543143,
      "output_token_source": "usage",
      "output_tokens": 45,
      "planned_context_tokens": 4096,
      "prompt_tokens": 3686,
      "reasoning_chunks": 0,
      "request_canary": {
        "capture_complete": true,
        "foreign_marker_count": 0,
        "marker": "ANVIL_REQ_0_00096",
        "marker_at_start": true,
        "observed_marker_count": 1,
        "passed": true
      },
      "request_index": 96,
      "time_to_first_output_ms": 481.9873000087682,
      "tpot_ms": 64.2882204543143,
      "ttft_ms": 481.988099985756,
      "visible_content_truncated": false,
      "visible_generation_ms": 2828.6809000128414
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    {
      "content_chunks": 44,
      "controlled_output": {
        "capture_complete": true,
        "exact_adherence": true,
        "observed_code_words": 32,
        "observed_extra_words": 0,
        "passed": true,
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        "requested_words": 32
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      "decode_tok_s": 15.771166114726723,
      "e2e_ms": 3274.9284000019543,
      "effective_prefill_tok_s": 7601.640238668354,
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      "mean_inter_token_latency_ms": 63.406852272402666,
      "mean_time_per_output_token_ms": 63.406852272402666,
      "output_token_source": "usage",
      "output_tokens": 45,
      "planned_context_tokens": 4096,
      "prompt_tokens": 3687,
      "reasoning_chunks": 0,
      "request_canary": {
        "capture_complete": true,
        "foreign_marker_count": 0,
        "marker": "ANVIL_REQ_0_00097",
        "marker_at_start": true,
        "observed_marker_count": 1,
        "passed": true
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      "request_index": 97,
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      "visible_content_truncated": false,
      "visible_generation_ms": 2789.900800009491
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    {
      "content_chunks": 44,
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        "capture_complete": true,
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        "observed_code_words": 32,
        "observed_extra_words": 0,
        "passed": true,
        "policy": "strict",
        "requested_words": 32
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      "decode_tok_s": 15.70191204682803,
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      "effective_prefill_tok_s": 7638.262495137788,
      "generation_ms": 2802.206499996828,
      "mean_inter_token_latency_ms": 63.68651136356427,
      "mean_time_per_output_token_ms": 63.68651136356427,
      "output_token_source": "usage",
      "output_tokens": 45,
      "planned_context_tokens": 4096,
      "prompt_tokens": 3687,
      "reasoning_chunks": 0,
      "request_canary": {
        "capture_complete": true,
        "foreign_marker_count": 0,
        "marker": "ANVIL_REQ_0_00098",
        "marker_at_start": true,
        "observed_marker_count": 1,
        "passed": true
      },
      "request_index": 98,
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      "tpot_ms": 63.68651136356427,
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      "visible_content_truncated": false,
      "visible_generation_ms": 2802.205900021363
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    {
      "content_chunks": 44,
      "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": 15.776400219106469,
      "e2e_ms": 3269.0795000235084,
      "effective_prefill_tok_s": 7679.592487738174,
      "generation_ms": 2788.975900009973,
      "mean_inter_token_latency_ms": 63.385815909317564,
      "mean_time_per_output_token_ms": 63.385815909317564,
      "output_token_source": "usage",
      "output_tokens": 45,
      "planned_context_tokens": 4096,
      "prompt_tokens": 3687,
      "reasoning_chunks": 0,
      "request_canary": {
        "capture_complete": true,
        "foreign_marker_count": 0,
        "marker": "ANVIL_REQ_0_00099",
        "marker_at_start": true,
        "observed_marker_count": 1,
        "passed": true
      },
      "request_index": 99,
      "time_to_first_output_ms": 480.10360001353547,
      "tpot_ms": 63.385815909317564,
      "ttft_ms": 480.1043000188656,
      "visible_content_truncated": false,
      "visible_generation_ms": 2788.975200004643
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  ],
  "requests": 100,
  "response_words": 32,
  "responses_received": 100,
  "run_id": "benchmark-20260924T013018Z",
  "schema": "anvil-serving.benchmark/v1",
  "serve_flags": {
    "no_thinking": false,
    "reasoning_effort": null,
    "shared_prefix_burst": false,
    "thinking_mode": "disabled"
  },
  "shared_prefix_tokens": 0,
  "source_recipe": null,
  "started_at": "2026-09-24T01:30:18Z",
  "started_at_unix_ns": 1790213418872063600,
  "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": 330145.5943000037
}
