{
  "title": "E2B / E4B direct and adaptive comparison",
  "date": "2026-10-06",
  "metric": "Verified-label accuracy for Jev/Kev; synthetic teacher-label agreement for Typed",
  "scope": "Previously exposed panels; same frozen cases; E2B integrated v3 and retained E4B comparison; model-specific policies and generation paths",
  "common_settings": {
    "target_weights": "Q8",
    "target_kv": "F16",
    "context": 8192,
    "mtp_draft_length": 4,
    "chat_slots": 1,
    "draft_cache_flags": "Q8_0 (retained launch flags)",
    "assistant_attention_kv": "F16 (shared target K/V tensors)"
  },
  "e2b": {
    "gate": "raw maxP < 0.99",
    "direct_augmented_weights": [
      0.5,
      0.5
    ],
    "sampler": "backend temperature sampling",
    "batch": 1024,
    "ubatch": 1024,
    "deadline_seconds": 180,
    "adaptive_execution": "actual integrated v3 run",
    "source_commit": "ee6bd37d34ae35d2e69ebb0c4b0957a10c727357",
    "policy": "e2b-raw99-blend50-v3",
    "prompt": "native labels with safe input escaping and structured-state ownership"
  },
  "e4b": {
    "policy": "e4b-calibrated75-g95-v1",
    "gate": "raw maxP < 0.95",
    "direct_augmented_weights": [
      0.25,
      0.75
    ],
    "sampler": "released sampler; no E2B backend-temperature flag",
    "batch": 2048,
    "ubatch": 1024,
    "deadline_seconds": 75,
    "adaptive_execution": "live selective client",
    "calibration_scope": "F16 KV outside measured release profile; temperatures held fixed"
  },
  "receipt_sha256": {
    "e4b-e2b-comparison-analysis.json": "b19713c86fc58ab837137009bb8796a6fb82c717465f9c84cfc63cafe5f8d19f",
    "e4b-e2b-comparison-freeze.json": "6ffc48de7155b73d69659ee7757b122354813b0984b02712a84b89854c40eacd",
    "e2b-v3-analysis.json": "1cd872865228fb33adaf12dd48d3656b98fd6f1f499d8adf364e04de4f1ddb27",
    "e2b-v3-freeze.json": "eb163f63b0eb3a706adaaf18d20ebe3acaef4ddb0690005149eef2cbc750d2a6",
    "e2b-v3-completion.json": "6e8eb1e7f38bb725321b5bc24683ec8ccfb24b34a92d5de15e94f776d30e26b0"
  },
  "panels": [
    {
      "key": "jevbench-public",
      "title": "JevBench",
      "n": 231,
      "source_sha256": "bd304bc512d70bcbd9ff0b7d039d241b86aa0072ae5533c3c8d493c170aeb4d0",
      "E2B": {
        "direct": 175,
        "adaptive": 202,
        "direct_pct": "75.76",
        "adaptive_pct": "87.45",
        "change_pp": "+11.69"
      },
      "E4B": {
        "direct": 183,
        "adaptive": 203,
        "direct_pct": "79.22",
        "adaptive_pct": "87.88",
        "change_pp": "+8.66"
      }
    },
    {
      "key": "kev-v9-clean",
      "title": "Kev v9 clean",
      "n": 1046,
      "source_sha256": "4ca4b28a171d6130f00e078316e9cdfcdedd0933a1b5fb967517c2e20244ad90",
      "E2B": {
        "direct": 728,
        "adaptive": 851,
        "direct_pct": "69.60",
        "adaptive_pct": "81.36",
        "change_pp": "+11.76"
      },
      "E4B": {
        "direct": 762,
        "adaptive": 842,
        "direct_pct": "72.85",
        "adaptive_pct": "80.50",
        "change_pp": "+7.65"
      }
    },
    {
      "key": "typed-decisions",
      "title": "Typed",
      "n": 2000,
      "source_sha256": "143541319ddc4445ba67098c0af0480646e8124d682365d649b8e5947298cc0d",
      "E2B": {
        "direct": 1237,
        "adaptive": 1366,
        "direct_pct": "61.85",
        "adaptive_pct": "68.30",
        "change_pp": "+6.45"
      },
      "E4B": {
        "direct": 1446,
        "adaptive": 1439,
        "direct_pct": "72.30",
        "adaptive_pct": "71.95",
        "change_pp": "\u22120.35"
      }
    }
  ]
}