{
 "measurement": "Parallel-subagent per-agent slope, re-measured on 2.1.231 to correct a live calculator constant",
 "claude_code_version": "2.1.231",
 "what_this_corrects": "/cost/ carried SUBAGENT = { base: 20398, configShare: 0.953 }. That 0.953 was 71,906/75,466, and 75,466 is a configuration figure this site WITHDREW as double-counted: it differenced two-turn run totals, and modelUsage sums across API calls, so it counted the configuration once per turn. The post was corrected the same day and the calculator was not, because a calculator constant is DERIVED rather than quoted, so grepping for the retracted number finds the comment and not the ratio computed from it. The tool was understating this site's own finding: on a 37,808-token configuration the old constants model 56,429 tokens per agent against 103,397 measured here, 45% low.",
 "method": {
  "reconstructed_from": "The published method block of configured-fanout-2-1-229.json.",
  "cells": "trivial (0 files), inline at 1 and 4 files, fanout at 1 and 4 subagents, each in BOTH configuration states, all inside one round before the next begins. Four rounds.",
  "config_size": "loaded minus isolated on a SINGLE-TURN trivial prompt. The single-turn constraint IS the correction being carried forward.",
  "slope": "(median at 4 agents - median at 1 agent) / 3, computed WITHIN each configuration state so the two are comparable.",
  "inline_control": "The paired arm that separates 'per subagent' from 'per unit of work'. It is flat, 302 isolated and 296 loaded, which is what makes the fan-out slope attributable to the subagents.",
  "estimator": "MEDIAN of four runs per cell, declared once and used throughout.",
  "controls": {
   "arrival": "Every run must leave exactly N files named agent-<k>.txt. 39 of 40 passed; the one failure is reported below, not dropped silently.",
   "flag": "--setting-sources project asserted PRESENT on isolated runs and ABSENT on loaded ones, so the arms cannot silently be the same measurement.",
   "turns": "Recorded per run, because a run total mistaken for a context size is the exact error this corrects.",
   "same_round": "All cells run inside one round before the next begins."
  }
 },
 "results": {
  "config_single_turn": 37808,
  "config_on_2_1_229": 37808,
  "trivial_isolated": 22398,
  "trivial_loaded": 60206,
  "fanout_slope_per_agent_isolated": 20690,
  "fanout_slope_per_agent_loaded": 103397,
  "fanout_slope_difference": 82707,
  "difference_over_config": 2.188,
  "inline_slope_per_file_isolated": 302,
  "inline_slope_per_file_loaded": 296,
  "calculator_constants_now": {
   "base": 20690,
   "configShare": 2.19
  },
  "calculator_constants_before": {
   "base": 20398,
   "configShare": 0.953,
   "modelled_per_agent_at_this_config": 56429,
   "measured_per_agent_at_this_config": 103397,
   "understatement": "45% low"
  },
  "ratio_across_versions": {
   "2.1.227_corrected": 1.91,
   "2.1.229": 2.46,
   "2.1.231": 2.19,
   "reading": "Three independent measurements cluster around 2x. 'About twice your configuration' is the transferable claim; the second decimal is not."
  },
  "raw_cells": {
   "fanout_isolated_1": [
    87126,
    87160,
    87445,
    87965
   ],
   "fanout_isolated_4": [
    149364,
    149364,
    149382,
    175081
   ],
   "fanout_loaded_1": [
    274231,
    274357,
    274442,
    335815
   ],
   "fanout_loaded_4": [
    508895,
    553610,
    615572,
    616812
   ],
   "inline_isolated_1": [
    44709,
    44709,
    44709,
    44709
   ],
   "inline_isolated_4": [
    45615,
    45615,
    45617,
    45617
   ],
   "inline_loaded_1": [
    120796,
    120796,
    120796
   ],
   "inline_loaded_4": [
    121685,
    121685,
    121685,
    121685
   ]
  }
 },
 "known_limits": {
  "loaded_fanout_has_spread": "Carried forward from the 2.1.229 corpus and it reproduces. The loaded 4-agent cell ran 508,895 / 553,610 / 615,572 / 616,812, a spread of 107,917 tokens. The median is used and the spread is published; a mean would be dragged by the low run.",
  "two_point_slope": "Carried forward and unchanged. The per-agent slope is still drawn through two agent counts, 1 and 4. It is the weakest shape here and the calculator page says so.",
  "one_machine": "Carried forward. 37,808 describes one machine's user-scope configuration and transfers to nobody. The 2x-ish multiple and the direction are the transferable parts.",
  "mechanism_unmeasured": "Carried forward. Why the penalty is about twice the configuration rather than once is still not measured.",
  "one_arrival_failure": "Retired from 'all 40 passed' to '39 of 40'. One loaded inline run at n=1 created 0 files of 1 and is recorded unscored. It sits in the inline control arm, not the fan-out arm the slope is drawn from."
 },
 "runs": [
  {
   "kind": "trivial",
   "n": 0,
   "isolated": true,
   "round": 0,
   "status": "ok",
   "files_expected": 0,
   "files_created": 0,
   "wall": 3.6,
   "context": 22398,
   "turns": 1,
   "cost": 0.067669,
   "reply": "OK"
  },
  {
   "kind": "trivial",
   "n": 0,
   "isolated": false,
   "round": 0,
   "status": "ok",
   "files_expected": 0,
   "files_created": 0,
   "wall": 6.5,
   "context": 60206,
   "turns": 1,
   "cost": 0.450378,
   "reply": "OK"
  },
  {
   "kind": "fanout",
   "n": 1,
   "isolated": true,
   "round": 0,
   "status": "ok",
   "files_expected": 1,
   "files_created": 1,
   "wall": 19.1,
   "context": 87965,
   "turns": 3,
   "cost": 0.19421175000000002,
   "reply": "DONE"
  },
  {
   "kind": "fanout",
   "n": 1,
   "isolated": false,
   "round": 0,
   "status": "ok",
   "files_expected": 1,
   "files_created": 1,
   "wall": 20.7,
   "context": 274442,
   "turns": 3,
   "cost": 0.86103,
   "reply": "DONE"
  },
  {
   "kind": "inline",
   "n": 1,
   "isolated": true,
   "round": 0,
   "status": "ok",
   "files_expected": 1,
   "files_created": 1,
   "wall": 7.4,
   "context": 44709,
   "turns": 2,
   "cost": 0.08598250000000002,
   "reply": "DONE"
  },
  {
   "kind": "inline",
   "n": 1,
   "isolated": false,
   "round": 0,
   "status": "ok",
   "files_expected": 1,
   "files_created": 1,
   "wall": 7.9,
   "context": 120796,
   "turns": 2,
   "cost": 0.48774799999999996,
   "reply": "DONE"
  },
  {
   "kind": "fanout",
   "n": 4,
   "isolated": true,
   "round": 0,
   "status": "ok",
   "files_expected": 4,
   "files_created": 4,
   "wall": 23.0,
   "context": 149382,
   "turns": 6,
   "cost": 0.2789385,
   "reply": "DONE"
  },
  {
   "kind": "fanout",
   "n": 4,
   "isolated": false,
   "round": 0,
   "status": "ok",
   "files_expected": 4,
   "files_created": 4,
   "wall": 34.7,
   "context": 616812,
   "turns": 7,
   "cost": 1.7464732500000004,
   "reply": "DONE"
  },
  {
   "kind": "inline",
   "n": 4,
   "isolated": true,
   "round": 0,
   "status": "ok",
   "files_expected": 4,
   "files_created": 4,
   "wall": 10.2,
   "context": 45617,
   "turns": 5,
   "cost": 0.10701749999999999,
   "reply": "DONE"
  },
  {
   "kind": "inline",
   "n": 4,
   "isolated": false,
   "round": 0,
   "status": "ok",
   "files_expected": 4,
   "files_created": 4,
   "wall": 13.8,
   "context": 121685,
   "turns": 5,
   "cost": 0.508188,
   "reply": "DONE"
  },
  {
   "kind": "trivial",
   "n": 0,
   "isolated": true,
   "round": 1,
   "status": "ok",
   "files_expected": 0,
   "files_created": 0,
   "wall": 3.0,
   "context": 22398,
   "turns": 1,
   "cost": 0.067669,
   "reply": "OK"
  },
  {
   "kind": "trivial",
   "n": 0,
   "isolated": false,
   "round": 1,
   "status": "ok",
   "files_expected": 0,
   "files_created": 0,
   "wall": 5.5,
   "context": 60206,
   "turns": 1,
   "cost": 0.450378,
   "reply": "OK"
  },
  {
   "kind": "fanout",
   "n": 1,
   "isolated": true,
   "round": 1,
   "status": "ok",
   "files_expected": 1,
   "files_created": 1,
   "wall": 19.1,
   "context": 87126,
   "turns": 3,
   "cost": 0.14466950000000003,
   "reply": "DONE"
  },
  {
   "kind": "fanout",
   "n": 1,
   "isolated": false,
   "round": 1,
   "status": "ok",
   "files_expected": 1,
   "files_created": 1,
   "wall": 30.7,
   "context": 335815,
   "turns": 4,
   "cost": 0.8631525,
   "reply": "DONE"
  },
  {
   "kind": "inline",
   "n": 1,
   "isolated": true,
   "round": 1,
   "status": "ok",
   "files_expected": 1,
   "files_created": 1,
   "wall": 6.8,
   "context": 44709,
   "turns": 2,
   "cost": 0.08598250000000002,
   "reply": "DONE"
  },
  {
   "kind": "inline",
   "n": 1,
   "isolated": false,
   "round": 1,
   "status": "ok",
   "files_expected": 1,
   "files_created": 1,
   "wall": 8.4,
   "context": 120796,
   "turns": 2,
   "cost": 0.48774799999999996,
   "reply": "DONE"
  },
  {
   "kind": "fanout",
   "n": 4,
   "isolated": true,
   "round": 1,
   "status": "ok",
   "files_expected": 4,
   "files_created": 4,
   "wall": 21.9,
   "context": 149364,
   "turns": 6,
   "cost": 0.27876699999999993,
   "reply": "DONE"
  },
  {
   "kind": "fanout",
   "n": 4,
   "isolated": false,
   "round": 1,
   "status": "ok",
   "files_expected": 4,
   "files_created": 4,
   "wall": 35.6,
   "context": 508895,
   "turns": 10,
   "cost": 0.7812963,
   "reply": "DONE"
  },
  {
   "kind": "inline",
   "n": 4,
   "isolated": true,
   "round": 1,
   "status": "ok",
   "files_expected": 4,
   "files_created": 4,
   "wall": 10.2,
   "context": 45615,
   "turns": 5,
   "cost": 0.1069475,
   "reply": "DONE"
  },
  {
   "kind": "inline",
   "n": 4,
   "isolated": false,
   "round": 1,
   "status": "ok",
   "files_expected": 4,
   "files_created": 4,
   "wall": 12.8,
   "context": 121685,
   "turns": 5,
   "cost": 0.508188,
   "reply": "DONE"
  },
  {
   "kind": "trivial",
   "n": 0,
   "isolated": true,
   "round": 2,
   "status": "ok",
   "files_expected": 0,
   "files_created": 0,
   "wall": 3.3,
   "context": 22398,
   "turns": 1,
   "cost": 0.067669,
   "reply": "OK"
  },
  {
   "kind": "trivial",
   "n": 0,
   "isolated": false,
   "round": 2,
   "status": "ok",
   "files_expected": 0,
   "files_created": 0,
   "wall": 6.3,
   "context": 60206,
   "turns": 1,
   "cost": 0.450378,
   "reply": "OK"
  },
  {
   "kind": "fanout",
   "n": 1,
   "isolated": true,
   "round": 2,
   "status": "ok",
   "files_expected": 1,
   "files_created": 1,
   "wall": 17.8,
   "context": 87445,
   "turns": 3,
   "cost": 0.1506945,
   "reply": "DONE"
  },
  {
   "kind": "fanout",
   "n": 1,
   "isolated": false,
   "round": 2,
   "status": "ok",
   "files_expected": 1,
   "files_created": 1,
   "wall": 20.3,
   "context": 274357,
   "turns": 3,
   "cost": 0.825768,
   "reply": "DONE"
  },
  {
   "kind": "inline",
   "n": 1,
   "isolated": true,
   "round": 2,
   "status": "ok",
   "files_expected": 1,
   "files_created": 1,
   "wall": 11.2,
   "context": 44709,
   "turns": 2,
   "cost": 0.0859875,
   "reply": "DONE"
  },
  {
   "kind": "inline",
   "n": 1,
   "isolated": false,
   "round": 2,
   "status": "ok",
   "files_expected": 1,
   "files_created": 1,
   "wall": 12.2,
   "context": 120796,
   "turns": 2,
   "cost": 0.48774799999999996,
   "reply": "DONE"
  },
  {
   "kind": "fanout",
   "n": 4,
   "isolated": true,
   "round": 2,
   "status": "ok",
   "files_expected": 4,
   "files_created": 4,
   "wall": 24.7,
   "context": 149364,
   "turns": 6,
   "cost": 0.27916399999999997,
   "reply": "DONE"
  },
  {
   "kind": "fanout",
   "n": 4,
   "isolated": false,
   "round": 2,
   "status": "ok",
   "files_expected": 4,
   "files_created": 4,
   "wall": 31.6,
   "context": 553610,
   "turns": 6,
   "cost": 1.7100825,
   "reply": "DONE"
  },
  {
   "kind": "inline",
   "n": 4,
   "isolated": true,
   "round": 2,
   "status": "ok",
   "files_expected": 4,
   "files_created": 4,
   "wall": 11.0,
   "context": 45615,
   "turns": 5,
   "cost": 0.1069475,
   "reply": "DONE"
  },
  {
   "kind": "inline",
   "n": 4,
   "isolated": false,
   "round": 2,
   "status": "ok",
   "files_expected": 4,
   "files_created": 4,
   "wall": 13.9,
   "context": 121685,
   "turns": 5,
   "cost": 0.508188,
   "reply": "DONE"
  },
  {
   "kind": "trivial",
   "n": 0,
   "isolated": true,
   "round": 3,
   "status": "ok",
   "files_expected": 0,
   "files_created": 0,
   "wall": 3.2,
   "context": 22398,
   "turns": 1,
   "cost": 0.067669,
   "reply": "OK"
  },
  {
   "kind": "trivial",
   "n": 0,
   "isolated": false,
   "round": 3,
   "status": "ok",
   "files_expected": 0,
   "files_created": 0,
   "wall": 5.7,
   "context": 60206,
   "turns": 1,
   "cost": 0.450378,
   "reply": "OK"
  },
  {
   "kind": "fanout",
   "n": 1,
   "isolated": true,
   "round": 3,
   "status": "ok",
   "files_expected": 1,
   "files_created": 1,
   "wall": 16.9,
   "context": 87160,
   "turns": 3,
   "cost": 0.14492549999999998,
   "reply": "DONE"
  },
  {
   "kind": "fanout",
   "n": 1,
   "isolated": false,
   "round": 3,
   "status": "ok",
   "files_expected": 1,
   "files_created": 1,
   "wall": 29.9,
   "context": 274231,
   "turns": 3,
   "cost": 0.824271,
   "reply": "DONE"
  },
  {
   "kind": "inline",
   "n": 1,
   "isolated": true,
   "round": 3,
   "status": "ok",
   "files_expected": 1,
   "files_created": 1,
   "wall": 6.7,
   "context": 44709,
   "turns": 2,
   "cost": 0.08598250000000002,
   "reply": "DONE"
  },
  {
   "kind": "inline",
   "n": 1,
   "isolated": false,
   "round": 3,
   "status": "arrival_control_failed",
   "files_expected": 1,
   "files_created": 0,
   "wall": 5.2,
   "context": 60262,
   "turns": 1,
   "cost": 0.45096299999999995,
   "reply": "DONE"
  },
  {
   "kind": "fanout",
   "n": 4,
   "isolated": true,
   "round": 3,
   "status": "ok",
   "files_expected": 4,
   "files_created": 4,
   "wall": 30.8,
   "context": 175081,
   "turns": 7,
   "cost": 0.31753649999999994,
   "reply": "DONE"
  },
  {
   "kind": "fanout",
   "n": 4,
   "isolated": false,
   "round": 3,
   "status": "ok",
   "files_expected": 4,
   "files_created": 4,
   "wall": 32.5,
   "context": 615572,
   "turns": 7,
   "cost": 1.73938575,
   "reply": "DONE"
  },
  {
   "kind": "inline",
   "n": 4,
   "isolated": true,
   "round": 3,
   "status": "ok",
   "files_expected": 4,
   "files_created": 4,
   "wall": 11.2,
   "context": 45617,
   "turns": 5,
   "cost": 0.10701749999999999,
   "reply": "DONE"
  },
  {
   "kind": "inline",
   "n": 4,
   "isolated": false,
   "round": 3,
   "status": "ok",
   "files_expected": 4,
   "files_created": 4,
   "wall": 12.2,
   "context": 121685,
   "turns": 5,
   "cost": 0.508188,
   "reply": "DONE"
  }
 ]
}