{
  "base_url": "[operator identity redacted]",
  "clock_domain_id": null,
  "completed": 12,
  "concurrency": 1,
  "configuration_fingerprint": null,
  "context_distribution": {
    "8192": 12
  },
  "context_seed": 17,
  "context_tokens": 8192,
  "controlled_output_policy": "observe",
  "engine": "strata",
  "failed": 0,
  "failures": [],
  "finished_at": "2026-10-05T10:11:02Z",
  "finished_at_unix_ns": 1791195062159570600,
  "gpu": "rtx5090",
  "manifest": null,
  "max_context_tokens": 32768,
  "max_tokens": 8192,
  "measurement_protocol": "capacity-v4-reasoning",
  "metric_population": {
    "aggregate_throughput_eligible": true,
    "attempted_requests": 12,
    "excluded_requests": 0,
    "failure_policy": "failed or contract-invalid responses retain sanitized timing and metadata but are excluded from performance distributions",
    "p99_interpretation": "descriptive-nearest-rank-only",
    "p99_interpretation_by_metric": {
      "decode_tok_s": "descriptive-nearest-rank-only",
      "e2e": "descriptive-nearest-rank-only",
      "effective_prefill_tok_s": "descriptive-nearest-rank-only",
      "tpot": "descriptive-nearest-rank-only",
      "ttft": "descriptive-nearest-rank-only"
    },
    "p99_minimum_recommended_samples": 100,
    "p99_samples_by_metric": {
      "decode_tok_s": 12,
      "e2e": 12,
      "effective_prefill_tok_s": 12,
      "tpot": 12,
      "ttft": 12
    },
    "performance_eligible_requests": 12,
    "successful_requests": 12
  },
  "metrics": {
    "completion_tokens_max": 437.0,
    "completion_tokens_mean": 273.25,
    "completion_tokens_mean_ci95_high": 320.43586129404235,
    "completion_tokens_mean_ci95_low": 226.06413870595762,
    "completion_tokens_min": 144.0,
    "completion_tokens_p25": 201.0,
    "completion_tokens_p50": 266.0,
    "completion_tokens_p75": 309.0,
    "completion_tokens_p90": 376.0,
    "completion_tokens_p95": 437.0,
    "completion_tokens_p99": 437.0,
    "completion_tokens_samples": 12,
    "completion_tokens_stddev": 83.39623383691747,
    "content_chunks": 448,
    "content_chunks_s": null,
    "controlled_output_exact_adherence": 0,
    "controlled_output_exact_adherence_rate": null,
    "controlled_output_samples": 0,
    "controlled_output_unobservable": 0,
    "decode_tok_s_max": 97.57542153199611,
    "decode_tok_s_mean": 84.96997490337388,
    "decode_tok_s_mean_ci95_high": 88.59438637503679,
    "decode_tok_s_mean_ci95_low": 81.34556343171097,
    "decode_tok_s_min": 76.74325148662787,
    "decode_tok_s_p25": 79.48964053960528,
    "decode_tok_s_p50": 83.0969929066089,
    "decode_tok_s_p75": 89.17971314939088,
    "decode_tok_s_p90": 92.85065343195501,
    "decode_tok_s_p95": 97.57542153199611,
    "decode_tok_s_p99": 97.57542153199611,
    "decode_tok_s_samples": 12,
    "decode_tok_s_stddev": 6.405780424954739,
    "e2e_max_ms": 33371.91470000107,
    "e2e_mean_ci95_high_ms": 31703.609776753343,
    "e2e_mean_ci95_low_ms": 30034.95475658094,
    "e2e_mean_ms": 30869.28226666714,
    "e2e_min_ms": 27670.345200000156,
    "e2e_p25_ms": 30120.0276999989,
    "e2e_p50_ms": 30851.82150000037,
    "e2e_p75_ms": 31553.68339999768,
    "e2e_p90_ms": 32245.12990000221,
    "e2e_p95_ms": 33371.91470000107,
    "e2e_p99_ms": 33371.91470000107,
    "e2e_samples": 12,
    "e2e_stddev_ms": 1474.5894261446244,
    "effective_prefill_tok_s_max": 286.0874725437244,
    "effective_prefill_tok_s_mean": 269.1537966038481,
    "effective_prefill_tok_s_mean_ci95_high": 275.75867003815347,
    "effective_prefill_tok_s_mean_ci95_low": 262.5489231695427,
    "effective_prefill_tok_s_min": 255.44893639537503,
    "effective_prefill_tok_s_p25": 257.7945051293644,
    "effective_prefill_tok_s_p50": 264.07079093993497,
    "effective_prefill_tok_s_p75": 278.372175111899,
    "effective_prefill_tok_s_p90": 284.5760964173583,
    "effective_prefill_tok_s_p95": 286.0874725437244,
    "effective_prefill_tok_s_p99": 286.0874725437244,
    "effective_prefill_tok_s_samples": 12,
    "effective_prefill_tok_s_stddev": 11.673445271202928,
    "generation_max_ms": 5246.880599999713,
    "generation_mean_ci95_high_ms": 3845.212962883482,
    "generation_mean_ci95_low_ms": 2634.3986537830824,
    "generation_mean_ms": 3239.805808333282,
    "generation_min_ms": 1603.5037000001466,
    "generation_p25_ms": 2049.69649999839,
    "generation_p50_ms": 3317.1548999998777,
    "generation_p75_ms": 3505.194199999096,
    "generation_p90_ms": 4680.224600000656,
    "generation_p95_ms": 5246.880599999713,
    "generation_p99_ms": 5246.880599999713,
    "generation_samples": 12,
    "generation_stddev_ms": 1069.995868312908,
    "mean_inter_token_latency_ms_max": 13.030461710033814,
    "mean_inter_token_latency_ms_mean": 11.828594955874477,
    "mean_inter_token_latency_ms_mean_ci95_high": 12.31892060846487,
    "mean_inter_token_latency_ms_mean_ci95_low": 11.338269303284084,
    "mean_inter_token_latency_ms_min": 10.248482499991951,
    "mean_inter_token_latency_ms_p25": 11.103363773584551,
    "mean_inter_token_latency_ms_p50": 11.82615972695836,
    "mean_inter_token_latency_ms_p75": 12.480598933335083,
    "mean_inter_token_latency_ms_p90": 12.913333976844799,
    "mean_inter_token_latency_ms_p95": 13.030461710033814,
    "mean_inter_token_latency_ms_p99": 13.030461710033814,
    "mean_inter_token_latency_ms_samples": 12,
    "mean_inter_token_latency_ms_stddev": 0.8666009617764543,
    "mean_time_per_output_token_max_ms": 13.030461710033814,
    "mean_time_per_output_token_mean_ci95_high_ms": 12.31892060846487,
    "mean_time_per_output_token_mean_ci95_low_ms": 11.338269303284084,
    "mean_time_per_output_token_mean_ms": 11.828594955874477,
    "mean_time_per_output_token_min_ms": 10.248482499991951,
    "mean_time_per_output_token_p25_ms": 11.103363773584551,
    "mean_time_per_output_token_p50_ms": 11.82615972695836,
    "mean_time_per_output_token_p75_ms": 12.480598933335083,
    "mean_time_per_output_token_p90_ms": 12.913333976844799,
    "mean_time_per_output_token_p95_ms": 13.030461710033814,
    "mean_time_per_output_token_p99_ms": 13.030461710033814,
    "mean_time_per_output_token_samples": 12,
    "mean_time_per_output_token_stddev_ms": 0.8666009617764543,
    "output_token_sources": {
      "usage": 12
    },
    "output_tokens": 3279,
    "prefix_cache_hit_avg": 0.0,
    "prompt_token_samples": 12,
    "prompt_tokens": 89085,
    "prompt_tokens_max": 7433.0,
    "prompt_tokens_mean": 7423.75,
    "prompt_tokens_mean_ci95_high": 7427.21377312225,
    "prompt_tokens_mean_ci95_low": 7420.28622687775,
    "prompt_tokens_min": 7415.0,
    "prompt_tokens_p25": 7418.0,
    "prompt_tokens_p50": 7422.0,
    "prompt_tokens_p75": 7427.0,
    "prompt_tokens_p90": 7433.0,
    "prompt_tokens_p95": 7433.0,
    "prompt_tokens_p99": 7433.0,
    "prompt_tokens_samples": 12,
    "prompt_tokens_stddev": 6.1218684016624145,
    "reasoning_chunks": 2795,
    "request_canary_passed": 12,
    "request_canary_samples": 12,
    "throughput_performance_eligible": true,
    "throughput_tok_s": 8.85175147610154,
    "time_to_first_output_max_ms": 29086.047900000267,
    "time_to_first_output_mean_ci95_high_ms": 28308.195732251934,
    "time_to_first_output_mean_ci95_low_ms": 26950.757184415783,
    "time_to_first_output_mean_ms": 27629.47645833386,
    "time_to_first_output_min_ms": 25943.11430000016,
    "time_to_first_output_p25_ms": 26264.85870000033,
    "time_to_first_output_p50_ms": 27842.63550000105,
    "time_to_first_output_p75_ms": 28773.446899998817,
    "time_to_first_output_p90_ms": 28833.04280000084,
    "time_to_first_output_p95_ms": 29086.047900000267,
    "time_to_first_output_p99_ms": 29086.047900000267,
    "time_to_first_output_samples": 12,
    "time_to_first_output_stddev_ms": 1199.5676188799634,
    "tpot_max_ms": 13.030461710033814,
    "tpot_mean_ci95_high_ms": 12.31892060846487,
    "tpot_mean_ci95_low_ms": 11.338269303284084,
    "tpot_mean_ms": 11.828594955874477,
    "tpot_min_ms": 10.248482499991951,
    "tpot_p25_ms": 11.103363773584551,
    "tpot_p50_ms": 11.82615972695836,
    "tpot_p75_ms": 12.480598933335083,
    "tpot_p90_ms": 12.913333976844799,
    "tpot_p95_ms": 13.030461710033814,
    "tpot_p99_ms": 13.030461710033814,
    "tpot_samples": 12,
    "tpot_stddev_ms": 0.8666009617764543,
    "ttft_max_ms": 32935.10580000293,
    "ttft_mean_ci95_high_ms": 31283.005821265717,
    "ttft_mean_ci95_low_ms": 29632.172078736447,
    "ttft_mean_ms": 30457.58895000108,
    "ttft_min_ms": 27364.927000002353,
    "ttft_p25_ms": 29724.924800000736,
    "ttft_p50_ms": 30405.80200000113,
    "ttft_p75_ms": 31041.311299999506,
    "ttft_p90_ms": 31872.39590000172,
    "ttft_p95_ms": 32935.10580000293,
    "ttft_p99_ms": 32935.10580000293,
    "ttft_samples": 12,
    "ttft_stddev_ms": 1458.8407739335582
  },
  "model": "qwen38-flash-next-strata-iq4xs-32k-c1-r36-m50",
  "performance_eligible": true,
  "prompt_cache_mode": "unique",
  "request_canaries": true,
  "request_timings": [
    {
      "content_chunks": 37,
      "controlled_output": null,
      "decode_tok_s": 76.74325148662787,
      "e2e_ms": 30324.183299999277,
      "effective_prefill_tok_s": 276.48320271698645,
      "generation_ms": 3505.194199999096,
      "mean_inter_token_latency_ms": 13.030461710033814,
      "mean_time_per_output_token_ms": 13.030461710033814,
      "output_token_source": "usage",
      "output_tokens": 270,
      "planned_context_tokens": 8192,
      "prompt_tokens": 7415,
      "reasoning_chunks": 230,
      "request_canary": {
        "capture_complete": true,
        "foreign_marker_count": 0,
        "marker": "ANVIL_REQ_17_00000",
        "marker_at_start": true,
        "observed_marker_count": 1,
        "passed": true
      },
      "request_index": 0,
      "time_to_first_output_ms": 26818.98910000018,
      "tpot_ms": 13.030461710033814,
      "ttft_ms": 29813.372399999935,
      "visible_content_truncated": false,
      "visible_generation_ms": 510.8108999993419
    },
    {
      "content_chunks": 45,
      "controlled_output": null,
      "decode_tok_s": 90.06279721997845,
      "e2e_ms": 30785.026900000958,
      "effective_prefill_tok_s": 266.39001182196705,
      "generation_ms": 2942.391399999906,
      "mean_inter_token_latency_ms": 11.103363773584551,
      "mean_time_per_output_token_ms": 11.103363773584551,
      "output_token_source": "usage",
      "output_tokens": 266,
      "planned_context_tokens": 8192,
      "prompt_tokens": 7417,
      "reasoning_chunks": 218,
      "request_canary": {
        "capture_complete": true,
        "foreign_marker_count": 0,
        "marker": "ANVIL_REQ_17_00001",
        "marker_at_start": true,
        "observed_marker_count": 1,
        "passed": true
      },
      "request_index": 1,
      "time_to_first_output_ms": 27842.63550000105,
      "tpot_ms": 11.103363773584551,
      "ttft_ms": 30322.291100001166,
      "visible_content_truncated": false,
      "visible_generation_ms": 462.7357999997912
    },
    {
      "content_chunks": 36,
      "controlled_output": null,
      "decode_tok_s": 89.17971314939088,
      "e2e_ms": 27670.345200000156,
      "effective_prefill_tok_s": 284.5760964173583,
      "generation_ms": 1603.5037000001466,
      "mean_inter_token_latency_ms": 11.213312587413613,
      "mean_time_per_output_token_ms": 11.213312587413613,
      "output_token_source": "usage",
      "output_tokens": 144,
      "planned_context_tokens": 8192,
      "prompt_tokens": 7418,
      "reasoning_chunks": 105,
      "request_canary": {
        "capture_complete": true,
        "foreign_marker_count": 0,
        "marker": "ANVIL_REQ_17_00002",
        "marker_at_start": true,
        "observed_marker_count": 1,
        "passed": true
      },
      "request_index": 2,
      "time_to_first_output_ms": 26066.84150000001,
      "tpot_ms": 11.213312587413613,
      "ttft_ms": 27364.927000002353,
      "visible_content_truncated": false,
      "visible_generation_ms": 305.41819999780273
    },
    {
      "content_chunks": 28,
      "controlled_output": null,
      "decode_tok_s": 92.85065343195501,
      "e2e_ms": 32140.75910000247,
      "effective_prefill_tok_s": 257.4279034819432,
      "generation_ms": 3317.1548999998777,
      "mean_inter_token_latency_ms": 10.769983441558045,
      "mean_time_per_output_token_ms": 10.769983441558045,
      "output_token_source": "usage",
      "output_tokens": 309,
      "planned_context_tokens": 8192,
      "prompt_tokens": 7420,
      "reasoning_chunks": 278,
      "request_canary": {
        "capture_complete": true,
        "foreign_marker_count": 0,
        "marker": "ANVIL_REQ_17_00003",
        "marker_at_start": true,
        "observed_marker_count": 1,
        "passed": true
      },
      "request_index": 3,
      "time_to_first_output_ms": 28823.604200002592,
      "tpot_ms": 10.769983441558045,
      "ttft_ms": 31872.39590000172,
      "visible_content_truncated": false,
      "visible_generation_ms": 268.3632000007492
    },
    {
      "content_chunks": 44,
      "controlled_output": null,
      "decode_tok_s": 84.55830320982786,
      "e2e_ms": 30120.0276999989,
      "effective_prefill_tok_s": 278.372175111899,
      "generation_ms": 3465.0647999987996,
      "mean_inter_token_latency_ms": 11.82615972695836,
      "mean_time_per_output_token_ms": 11.82615972695836,
      "output_token_source": "usage",
      "output_tokens": 294,
      "planned_context_tokens": 8192,
      "prompt_tokens": 7420,
      "reasoning_chunks": 247,
      "request_canary": {
        "capture_complete": true,
        "foreign_marker_count": 0,
        "marker": "ANVIL_REQ_17_00004",
        "marker_at_start": true,
        "observed_marker_count": 1,
        "passed": true
      },
      "request_index": 4,
      "time_to_first_output_ms": 26654.9629000001,
      "tpot_ms": 11.82615972695836,
      "ttft_ms": 29724.924800000736,
      "visible_content_truncated": false,
      "visible_generation_ms": 395.1028999981645
    },
    {
      "content_chunks": 38,
      "controlled_output": null,
      "decode_tok_s": 77.43933532526327,
      "e2e_ms": 29287.667800002964,
      "effective_prefill_tok_s": 286.0874725437244,
      "generation_ms": 3344.553500002803,
      "mean_inter_token_latency_ms": 12.913333976844799,
      "mean_time_per_output_token_ms": 12.913333976844799,
      "output_token_source": "usage",
      "output_tokens": 260,
      "planned_context_tokens": 8192,
      "prompt_tokens": 7422,
      "reasoning_chunks": 219,
      "request_canary": {
        "capture_complete": true,
        "foreign_marker_count": 0,
        "marker": "ANVIL_REQ_17_00005",
        "marker_at_start": true,
        "observed_marker_count": 1,
        "passed": true
      },
      "request_index": 5,
      "time_to_first_output_ms": 25943.11430000016,
      "tpot_ms": 12.913333976844799,
      "ttft_ms": 28883.999900001072,
      "visible_content_truncated": false,
      "visible_generation_ms": 403.6679000018921
    },
    {
      "content_chunks": 44,
      "controlled_output": null,
      "decode_tok_s": 80.12435984374498,
      "e2e_ms": 30945.083300000988,
      "effective_prefill_tok_s": 282.65904967537125,
      "generation_ms": 4680.224600000656,
      "mean_inter_token_latency_ms": 12.480598933335083,
      "mean_time_per_output_token_ms": 12.480598933335083,
      "output_token_source": "usage",
      "output_tokens": 376,
      "planned_context_tokens": 8192,
      "prompt_tokens": 7424,
      "reasoning_chunks": 329,
      "request_canary": {
        "capture_complete": true,
        "foreign_marker_count": 0,
        "marker": "ANVIL_REQ_17_00006",
        "marker_at_start": true,
        "observed_marker_count": 1,
        "passed": true
      },
      "request_index": 6,
      "time_to_first_output_ms": 26264.85870000033,
      "tpot_ms": 12.480598933335083,
      "ttft_ms": 30405.80200000113,
      "visible_content_truncated": false,
      "visible_generation_ms": 539.2812999998569
    },
    {
      "content_chunks": 40,
      "controlled_output": null,
      "decode_tok_s": 82.8238540752425,
      "e2e_ms": 32245.12990000221,
      "effective_prefill_tok_s": 262.2069628864737,
      "generation_ms": 3923.9903000016056,
      "mean_inter_token_latency_ms": 12.073816307697248,
      "mean_time_per_output_token_ms": 12.073816307697248,
      "output_token_source": "usage",
      "output_tokens": 326,
      "planned_context_tokens": 8192,
      "prompt_tokens": 7426,
      "reasoning_chunks": 283,
      "request_canary": {
        "capture_complete": true,
        "foreign_marker_count": 0,
        "marker": "ANVIL_REQ_17_00007",
        "marker_at_start": true,
        "observed_marker_count": 1,
        "passed": true
      },
      "request_index": 7,
      "time_to_first_output_ms": 28321.139600000606,
      "tpot_ms": 12.073816307697248,
      "ttft_ms": 31766.22640000278,
      "visible_content_truncated": false,
      "visible_generation_ms": 478.9034999994328
    },
    {
      "content_chunks": 39,
      "controlled_output": null,
      "decode_tok_s": 83.0969929066089,
      "e2e_ms": 33371.91470000107,
      "effective_prefill_tok_s": 264.07079093993497,
      "generation_ms": 5246.880599999713,
      "mean_inter_token_latency_ms": 12.034129816513103,
      "mean_time_per_output_token_ms": 12.034129816513103,
      "output_token_source": "usage",
      "output_tokens": 437,
      "planned_context_tokens": 8192,
      "prompt_tokens": 7427,
      "reasoning_chunks": 395,
      "request_canary": {
        "capture_complete": true,
        "foreign_marker_count": 0,
        "marker": "ANVIL_REQ_17_00008",
        "marker_at_start": true,
        "observed_marker_count": 1,
        "passed": true
      },
      "request_index": 8,
      "time_to_first_output_ms": 28125.034100001358,
      "tpot_ms": 12.034129816513103,
      "ttft_ms": 32935.10580000293,
      "visible_content_truncated": false,
      "visible_generation_ms": 436.808899998141
    },
    {
      "content_chunks": 27,
      "controlled_output": null,
      "decode_tok_s": 97.57542153199611,
      "e2e_ms": 31135.744399998657,
      "effective_prefill_tok_s": 255.44893639537503,
      "generation_ms": 2049.69649999839,
      "mean_inter_token_latency_ms": 10.248482499991951,
      "mean_time_per_output_token_ms": 10.248482499991951,
      "output_token_source": "usage",
      "output_tokens": 201,
      "planned_context_tokens": 8192,
      "prompt_tokens": 7430,
      "reasoning_chunks": 171,
      "request_canary": {
        "capture_complete": true,
        "foreign_marker_count": 0,
        "marker": "ANVIL_REQ_17_00009",
        "marker_at_start": true,
        "observed_marker_count": 1,
        "passed": true
      },
      "request_index": 9,
      "time_to_first_output_ms": 29086.047900000267,
      "tpot_ms": 10.248482499991951,
      "ttft_ms": 30909.002399999736,
      "visible_content_truncated": false,
      "visible_generation_ms": 226.74199999892153
    },
    {
      "content_chunks": 35,
      "controlled_output": null,
      "decode_tok_s": 79.48964053960528,
      "e2e_ms": 31553.68339999768,
      "effective_prefill_tok_s": 258.3284521257794,
      "generation_ms": 2780.236499998864,
      "mean_inter_token_latency_ms": 12.580255656103457,
      "mean_time_per_output_token_ms": 12.580255656103457,
      "output_token_source": "usage",
      "output_tokens": 222,
      "planned_context_tokens": 8192,
      "prompt_tokens": 7433,
      "reasoning_chunks": 184,
      "request_canary": {
        "capture_complete": true,
        "foreign_marker_count": 0,
        "marker": "ANVIL_REQ_17_00010",
        "marker_at_start": true,
        "observed_marker_count": 1,
        "passed": true
      },
      "request_index": 10,
      "time_to_first_output_ms": 28773.446899998817,
      "tpot_ms": 12.580255656103457,
      "ttft_ms": 31041.311299999506,
      "visible_content_truncated": false,
      "visible_generation_ms": 512.3720999981742
    },
    {
      "content_chunks": 35,
      "controlled_output": null,
      "decode_tok_s": 85.69537612024553,
      "e2e_ms": 30851.82150000037,
      "effective_prefill_tok_s": 257.7945051293644,
      "generation_ms": 2018.7786999995296,
      "mean_inter_token_latency_ms": 11.669241040459708,
      "mean_time_per_output_token_ms": 11.669241040459708,
      "output_token_source": "usage",
      "output_tokens": 174,
      "planned_context_tokens": 8192,
      "prompt_tokens": 7433,
      "reasoning_chunks": 136,
      "request_canary": {
        "capture_complete": true,
        "foreign_marker_count": 0,
        "marker": "ANVIL_REQ_17_00011",
        "marker_at_start": true,
        "observed_marker_count": 1,
        "passed": true
      },
      "request_index": 11,
      "time_to_first_output_ms": 28833.04280000084,
      "tpot_ms": 11.669241040459708,
      "ttft_ms": 30451.708399999916,
      "visible_content_truncated": false,
      "visible_generation_ms": 400.1131000004534
    }
  ],
  "requests": 12,
  "response_words": 0,
  "responses_received": 12,
  "run_id": "benchmark-20261005T100451Z",
  "sampling": {
    "temperature": {
      "effective_request": 0.9,
      "requested": 0.9,
      "sent": true
    },
    "top_p": {
      "effective_request": 0.95,
      "requested": 0.95,
      "sent": true
    }
  },
  "schema": "anvil-serving.benchmark/v1",
  "serve_flags": {
    "no_thinking": false,
    "reasoning_effort": null,
    "shared_prefix_burst": false,
    "thinking_mode": "default"
  },
  "shared_prefix_tokens": 0,
  "source_recipe": null,
  "started_at": "2026-10-05T10:04:51Z",
  "started_at_unix_ns": 1791194691724404300,
  "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": 370435.16290000116
}
