{
 "trial": "Re-verification against Claude Code 2.1.228",
 "date": "2026-08-12",
 "version": "2.1.228 (Claude Code)",
 "method": "Every arm measured against its OWN floor in the SAME round, because the session baseline drifts ~290 tokens and cross-round pairing has produced bogus deltas before. No --setting-sources isolation on the batching and CLAUDE.md arms: those published figures are paired deltas taken with the user-level CLAUDE.md loaded in both arms where it cancels. The configured subagent arm is likewise not isolated, by design, because that figure is about the cost with configuration present.",
 "arrival_control": "A marker planted past the end of each file that the reply had to quote back. 4 of 4 batching rounds scored 3/3 in both arms.",
 "noise_floor_note": "The skill-body signal is ~5 tokens against ~290 tokens of baseline drift, so a paired round only measures it when the drift step does not land between the pair's two calls. Rounds where it did are recorded unscored rather than emitting a ratio built on a negative denominator.",
 "batching": {
  "rounds": [
   {
    "batched": {
     "context": 127988,
     "arrival": "3/3",
     "reply": "MARMOSET-3312-0, MARMOSET-3312-1, MARMOSET-3312-2"
    },
    "sequential": {
     "context": 255949,
     "arrival": "3/3",
     "reply": "MARMOSET-3312-0, MARMOSET-3312-1, MARMOSET-3312-2"
    },
    "ratio": 2.0,
    "scored": true
   },
   {
    "batched": {
     "context": 127430,
     "arrival": "3/3",
     "reply": "MARMOSET-3312-0, MARMOSET-3312-1, MARMOSET-3312-2"
    },
    "sequential": {
     "context": 254810,
     "arrival": "3/3",
     "reply": "MARMOSET-3312-0, MARMOSET-3312-1, MARMOSET-3312-2"
    },
    "ratio": 2.0,
    "scored": true
   },
   {
    "batched": {
     "context": 127430,
     "arrival": "3/3",
     "reply": "MARMOSET-3312-0, MARMOSET-3312-1, MARMOSET-3312-2"
    },
    "sequential": {
     "context": 254807,
     "arrival": "3/3",
     "reply": "MARMOSET-3312-0, MARMOSET-3312-1, MARMOSET-3312-2"
    },
    "ratio": 2.0,
    "scored": true
   },
   {
    "batched": {
     "context": 127430,
     "arrival": "3/3",
     "reply": "MARMOSET-3312-0, MARMOSET-3312-1, MARMOSET-3312-2"
    },
    "sequential": {
     "context": 254807,
     "arrival": "3/3",
     "reply": "MARMOSET-3312-0, MARMOSET-3312-1, MARMOSET-3312-2"
    },
    "ratio": 2.0,
    "scored": true
   }
  ],
  "summary": {
   "rounds": 4,
   "all_ratio_2_0": true,
   "batched_range": [
    127430,
    127988
   ],
   "sequential_range": [
    254807,
    255949
   ],
   "published_2_1_227": "batched 128,762 / sequential 257,486 -> 2.0x"
  }
 },
 "claude_md_vs_skill": {
  "rounds": [
   {
    "claude_md_28k": {
     "floor": 60231,
     "configured": 68217,
     "delta": 7986,
     "reply_floor": "OK",
     "reply_conf": "OK"
    },
    "skill_body_28k": {
     "floor": 60233,
     "configured": 59949,
     "delta": -284,
     "reply_floor": "OK",
     "reply_conf": "OK"
    },
    "ratio": -28.1
   },
   {
    "claude_md_28k": {
     "floor": 59944,
     "configured": 68081,
     "delta": 8137,
     "reply_floor": "OK",
     "reply_conf": "OK"
    },
    "skill_body_28k": {
     "floor": 59897,
     "configured": 59902,
     "delta": 5,
     "reply_floor": "OK",
     "reply_conf": "OK"
    },
    "skill_within_noise": true,
    "scored": true,
    "ratio": 1627.4
   },
   {
    "claude_md_28k": {
     "floor": 59944,
     "configured": 68032,
     "delta": 8088,
     "reply_floor": "OK",
     "reply_conf": "OK"
    },
    "skill_body_28k": {
     "floor": 59946,
     "configured": 59951,
     "delta": 5,
     "reply_floor": "OK",
     "reply_conf": "OK"
    },
    "skill_within_noise": true,
    "scored": true,
    "ratio": 1617.6
   },
   {
    "claude_md_28k": {
     "floor": 59944,
     "configured": 68081,
     "delta": 8137,
     "reply_floor": "OK",
     "reply_conf": "OK"
    },
    "skill_body_28k": {
     "floor": 59946,
     "configured": 59951,
     "delta": 5,
     "reply_floor": "OK",
     "reply_conf": "OK"
    },
    "skill_within_noise": true,
    "scored": true,
    "ratio": 1627.4
   }
  ],
  "summary": {
   "rounds": 4,
   "scored": 3,
   "claude_md_deltas": [
    8137,
    8088,
    8137
   ],
   "skill_deltas": [
    5,
    5,
    5
   ],
   "published_2_1_227": "claude_md +7,617 / skill +7",
   "ratio_across_versions": {
    "2.1.224": 1845,
    "2.1.227": 1088.1,
    "2.1.228": 1627.4
   }
  }
 },
 "configured_subagent": {
  "runs": [
   {
    "arm": "configured",
    "n": 1,
    "isolated": false,
    "status": "ok",
    "files_created": 1,
    "context_tokens": 213485,
    "cost_usd": 0.8261452499999999,
    "turns": 2,
    "wall": 22.1
   },
   {
    "arm": "configured",
    "n": 4,
    "isolated": false,
    "status": "ok",
    "files_created": 4,
    "context_tokens": 492117,
    "cost_usd": 1.678636,
    "turns": 5,
    "wall": 26.0
   },
   {
    "arm": "configured",
    "n": 1,
    "isolated": false,
    "status": "ok",
    "files_created": 1,
    "context_tokens": 213347,
    "cost_usd": 0.7828450000000001,
    "turns": 2,
    "wall": 17.5
   },
   {
    "arm": "configured",
    "n": 4,
    "isolated": false,
    "status": "ok",
    "files_created": 4,
    "context_tokens": 490834,
    "cost_usd": 1.6643352500000002,
    "turns": 5,
    "wall": 24.6
   },
   {
    "arm": "configured",
    "n": 1,
    "isolated": false,
    "status": "ok",
    "files_created": 1,
    "context_tokens": 213599,
    "cost_usd": 0.7897095000000001,
    "turns": 2,
    "wall": 18.3
   },
   {
    "arm": "configured",
    "n": 4,
    "isolated": false,
    "status": "ok",
    "files_created": 4,
    "context_tokens": 490804,
    "cost_usd": 1.6579369999999998,
    "turns": 5,
    "wall": 21.8
   },
   {
    "arm": "configured",
    "n": 1,
    "isolated": false,
    "status": "ok",
    "files_created": 1,
    "context_tokens": 213118,
    "cost_usd": 0.780073,
    "turns": 2,
    "wall": 18.8
   },
   {
    "arm": "configured",
    "n": 4,
    "isolated": false,
    "status": "ok",
    "files_created": 4,
    "context_tokens": 490683,
    "cost_usd": 1.655558,
    "turns": 5,
    "wall": 22.0
   }
  ],
  "summary": {
   "n1_median": 213416.0,
   "n4_median": 490819.0,
   "per_agent": 92468,
   "published_2_1_227": 92304
  }
 }
}