{
  "title": "Single-agent and delegated extraction: five runs per approach",
  "recorded_date": "2026-09-19",
  "fixture": "Frozen synthetic ITviec HTML, 20 expected jobs; identical fixture SHA-256 f29423c48f253dd819412605f93380ed8ea17a7e376b6331ef0a6ca49054a093",
  "method": {
    "sample": "One prior accepted run plus four additional independent runs for each approach. Not paired runs or a randomized benchmark.",
    "input": "Cumulative prompt_token_count across model calls, including cached input; not unique text or per-call context size.",
    "output": "candidates_token_count as recorded by ADK. thoughts_token_count retained separately, not added to the output-token column.",
    "cost": "Estimated USD from the saved run evidence, not an invoice. The blocked delegated run is reconstructed from its persisted root and child usage with the same estimator. Estimator: uncached input, cached input, candidates and thoughts priced separately. Rates per million: Terra 2 / 0.2 / 12 / 12; Luna 0.2 / 0.02 / 1.2 / 1.2. These are historical estimator conventions, not current pricing guidance.",
    "elapsed_time": "First-to-last persisted ADK event span in milliseconds, including worker execution within each delegated parent run. AGE-76 values come from the archived five-run summary; AGE-80 run 1 comes from its archived evidence manifest, and runs 2-5 from timestamped ADK events retained in the archived task output. These spans exclude pre-run setup and post-run evidence processing. They are not model-only latency. The original child-session databases are no longer available, so independent worker wall time cannot be recovered; do not add worker time to the parent span.",
    "model_ids": "Single agent and delegated parent: openai/responses/gpt-5.6-terra. Delegated worker: openai/responses/gpt-5.6-luna. Configured routes are corroborated by recorded parent modelVersion values and worker provider-call logs; the unavailable child databases prevent an event-by-event modelVersion audit of every worker run.",
    "limits": "Different model allocation and harness policies; no isolated causal estimate. Flagged means results saved and reread but repair_limit_respected=false. Do not count as a clean pass.",
    "accounting": "All recorded root and child model-usage events in each isolated session database, grouped by author. Costs checked against four delegated and three single-agent evidence JSONs plus failed-run metrics; no new inference."
  },
  "totals": {
    "single": {
      "input": 1876566,
      "cached": 1684996,
      "output": 23839,
      "thoughts": 6675,
      "calls": 109,
      "cost": 1.0863072
    },
    "parent": {
      "input": 181808,
      "cached": 101267,
      "output": 4924,
      "thoughts": 732,
      "calls": 32,
      "cost": 0.24920740000000002
    },
    "worker": {
      "input": 3414898,
      "cached": 3179730,
      "output": 43863,
      "thoughts": 11070,
      "calls": 129,
      "cost": 0.17654779999999998
    }
  },
  "runs": [
    {
      "approach": "single",
      "run": 1,
      "session_id": "age76-terra-live-20260919T120800Z",
      "outcome": "passed",
      "adk_event_span_ms": 334934,
      "estimated_cost_usd": 0.2198174,
      "agents": [
        {
          "calls": 26,
          "input": 438214,
          "cached": 397857,
          "output": 3850,
          "thoughts": 1111,
          "role": "single",
          "cost": 0.2198174
        }
      ]
    },
    {
      "approach": "single",
      "run": 2,
      "session_id": "age76-terra-quantile-02-20260919T155840Z",
      "outcome": "blocked",
      "adk_event_span_ms": 103125,
      "estimated_cost_usd": 0.1940232,
      "agents": [
        {
          "calls": 21,
          "input": 292452,
          "cached": 264116,
          "output": 5385,
          "thoughts": 1659,
          "role": "single",
          "cost": 0.1940232
        }
      ]
    },
    {
      "approach": "single",
      "run": 3,
      "session_id": "age76-terra-quantile-03-20260919T160300Z",
      "outcome": "passed",
      "adk_event_span_ms": 97051,
      "estimated_cost_usd": 0.2230332,
      "agents": [
        {
          "calls": 23,
          "input": 420420,
          "cached": 377506,
          "output": 3986,
          "thoughts": 1156,
          "role": "single",
          "cost": 0.2230332
        }
      ]
    },
    {
      "approach": "single",
      "run": 4,
      "session_id": "age76-terra-quantile-04-20260919T160800Z",
      "outcome": "passed",
      "adk_event_span_ms": 89285,
      "estimated_cost_usd": 0.2388272,
      "agents": [
        {
          "calls": 19,
          "input": 399544,
          "cached": 353236,
          "output": 5023,
          "thoughts": 1274,
          "role": "single",
          "cost": 0.2388272
        }
      ]
    },
    {
      "approach": "single",
      "run": 5,
      "session_id": "age76-terra-quantile-05-20260919T161000Z",
      "outcome": "blocked",
      "adk_event_span_ms": 118392,
      "estimated_cost_usd": 0.2106062,
      "agents": [
        {
          "calls": 20,
          "input": 325936,
          "cached": 292281,
          "output": 5595,
          "thoughts": 1475,
          "role": "single",
          "cost": 0.2106062
        }
      ]
    },
    {
      "approach": "delegated",
      "run": 1,
      "session_id": "age80-fresh-live-20260919T115324Z",
      "outcome": "passed",
      "adk_event_span_ms": 204442,
      "estimated_cost_usd": 0.0724086,
      "agents": [
        {
          "calls": 6,
          "input": 32131,
          "cached": 14501,
          "output": 807,
          "thoughts": 87,
          "role": "parent",
          "cost": 0.0488882
        },
        {
          "calls": 20,
          "input": 437288,
          "cached": 400280,
          "output": 5430,
          "thoughts": 1331,
          "role": "worker",
          "cost": 0.0235204
        }
      ]
    },
    {
      "approach": "delegated",
      "run": 2,
      "session_id": "age80-quantile-r1-20260919T160100Z",
      "outcome": "passed",
      "adk_event_span_ms": 150357,
      "estimated_cost_usd": 0.06925794,
      "agents": [
        {
          "calls": 6,
          "input": 30909,
          "cached": 13536,
          "output": 729,
          "thoughts": 49,
          "role": "parent",
          "cost": 0.0467892
        },
        {
          "calls": 20,
          "input": 354831,
          "cached": 324417,
          "output": 6495,
          "thoughts": 1753,
          "role": "worker",
          "cost": 0.02246874
        }
      ]
    },
    {
      "approach": "delegated",
      "run": 3,
      "session_id": "age80-quantile-r2-20260919T160400Z",
      "outcome": "passed",
      "adk_event_span_ms": 166891,
      "estimated_cost_usd": 0.07144132,
      "agents": [
        {
          "calls": 6,
          "input": 30975,
          "cached": 19399,
          "output": 775,
          "thoughts": 93,
          "role": "parent",
          "cost": 0.0374478
        },
        {
          "calls": 25,
          "input": 705227,
          "cached": 660546,
          "output": 7654,
          "thoughts": 2218,
          "role": "worker",
          "cost": 0.03399352
        }
      ]
    },
    {
      "approach": "delegated",
      "run": 4,
      "session_id": "age80-quantile-r3-20260919T160700Z",
      "outcome": "flagged",
      "adk_event_span_ms": 184433,
      "estimated_cost_usd": 0.07880336,
      "agents": [
        {
          "calls": 6,
          "input": 31057,
          "cached": 16085,
          "output": 778,
          "thoughts": 67,
          "role": "parent",
          "cost": 0.043301
        },
        {
          "calls": 24,
          "input": 688278,
          "cached": 644198,
          "output": 9307,
          "thoughts": 2195,
          "role": "worker",
          "cost": 0.03550236
        }
      ]
    },
    {
      "approach": "delegated",
      "run": 5,
      "session_id": "age80-quantile-r4-20260919T161000Z",
      "outcome": "blocked",
      "adk_event_span_ms": 344995,
      "estimated_cost_usd": 0.13384398,
      "agents": [
        {
          "calls": 8,
          "input": 56736,
          "cached": 37746,
          "output": 1835,
          "thoughts": 436,
          "role": "parent",
          "cost": 0.0727812
        },
        {
          "calls": 40,
          "input": 1229274,
          "cached": 1150289,
          "output": 14977,
          "thoughts": 3573,
          "role": "worker",
          "cost": 0.06106278
        }
      ]
    }
  ]
}