{
  "session": "v12_adversarial_round",
  "date": "2025-09-24",
  "pod": "gpu-518b1253 A40 48GB",
  "base_checkpoint": "v11_anneal",
  "strategy": "adversarial/compositional reasoning data instead of templates: BIG-Bench Hard-style tasks + ReClor + brute-force-verified puzzle generator (gen_hard2)",
  "data": {
    "v12_mix_rows": 231386,
    "v12_dev_rows": 10107,
    "new_sources": [
      "tasksource/bigbench 16 configs",
      "reclor 4.6k",
      "gh2 22.5k solver-verified puzzles"
    ],
    "anneal_mix_rows": 69893
  },
  "results": {
    "v11_anneal_baseline_v12dev": {
      "acc": 0.614,
      "ece": 0.079,
      "noul_brier": 0.133
    },
    "v12": {
      "dev_acc": 0.7336,
      "dev_ece": 0.039,
      "noul_brier": 0.034,
      "tev1_transfer": 0.438,
      "gh2_dev": 0.504,
      "reason_dev": 0.648,
      "jevbench": {
        "easy": 0.583,
        "hard": 0.306,
        "original": 0.444
      }
    },
    "v12_anneal": {
      "dev_acc": 0.7329,
      "dev_ece": 0.034,
      "noul_brier": 0.033,
      "jevbench": {
        "easy": 0.604,
        "hard": 0.324,
        "original": 0.458
      }
    },
    "v12_soup_50v12_30a_20v10": {
      "jevbench": {
        "easy": 0.604,
        "hard": 0.342,
        "original": 0.431
      }
    },
    "v12a_soup50": {
      "jevbench": {
        "easy": 0.667,
        "hard": 0.315,
        "original": 0.431
      }
    },
    "v12a_soup40": {
      "jevbench": {
        "easy": 0.667,
        "hard": 0.342,
        "original": 0.403
      },
      "dev_acc": 0.6487,
      "dev_ece": 0.021
    },
    "v12_rl_grpo400": {
      "data": "12k focused exact-match families (order/swaps/tracking/logical/navigate)",
      "reward_mean": 0.42,
      "gh2_dev": 0.502,
      "reason_dev": 0.639,
      "jevbench": {
        "easy": 0.604,
        "hard": 0.351,
        "original": 0.486
      },
      "note": "BEST original tier of all checkpoints (48.6), hard 35.1 near v10; calibration degraded (dev ECE 0.247)"
    },
    "v12_rlsoup_35rl_35a_30v10": {
      "jevbench": {
        "easy": 0.646,
        "hard": 0.342,
        "original": 0.444
      }
    }
  },
  "heldout_family_gains_v12": {
    "date_understanding": [
      0.167,
      1.0
    ],
    "temporal_sequences": [
      0.625,
      1.0
    ],
    "disambiguation_qa": [
      0.778,
      1.0
    ],
    "gh2_arith": [
      0.116,
      0.905
    ],
    "reclor": [
      0.753,
      0.848
    ],
    "hyperbaton": [
      0.546,
      0.816
    ],
    "gh2_comp_policy_brier": [
      0.149,
      0.001
    ],
    "gh2_temp_overlap_brier": [
      0.705,
      0.095
    ]
  },
  "unchanged_weak_families": [
    "tracking_shuffled_objects 0.16",
    "gh2_swaps 0.22",
    "gh2_order 0.28",
    "logical_deduction 0.48"
  ],
  "conclusion": "v12/v12_anneal are the strongest general decision models (73.3% dev, best calibration, best JevBench original 45.8). nextrun_v10 remains best on JevBench easy (68.8). v12a_soup40 blends to 66.7 easy/34.2 hard while keeping most capability gains. Multi-step state tracking remains unsolved. GRPO on verifiable families lifted JevBench original to a session-best 48.6 and hard to 35.1 but hurt calibration; soups partially restore it. Release candidates: nextrun_v10 (bench easy), v12a_soup40 (balanced), v12_anneal (general+calibration), v12_rl (original/hard tier).",
  "checkpoints": {
    "runs/v12/final.pt": "full adversarial SFT from v11_anneal, 231k rows",
    "runs/v12_anneal/final.pt": "replay-heavy low-LR anneal of v12, 70k rows",
    "runs/v12a_soup40.pt": "0.4*v12_anneal + 0.6*nextrun_v10 weight soup",
    "runs/v12a_soup50.pt": "0.5/0.5 soup",
    "runs/v12_soup.pt": "0.5*v12+0.3*v11_anneal+0.2*v10",
    "runs/v12_rl/step400.pt": "GRPO 400 steps on exact-match reasoning families from v12_anneal; best original tier",
    "runs/v12_rlsoup.pt": "0.35*v12_rl+0.35*v12_anneal+0.30*v10"
  }
}