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Detailed verifier-backed artifacts for benchmark version 0.3.
This release contains the frozen 263-task manifest (benchmark-v0.3-version-manifest.json), the deterministic STRAT-50 panel (benchmark-v0.3-panel.json, covering all 41 cases), a machine-readable leaderboard (benchmark-v0.3-leaderboard.json), per-cohort run bundles (.tar.zst), and SHA-256 checksums (SHA256SUMS). Every scored cohort has 50 distinct terminal verifier verdicts on the same panel with the p4_normal budget of 16 attempts and 120 tool calls (reasoning_effort=low; the three Mistral cohorts use provider-default sampling because the Mistral route rejects reasoning_effort). Infrastructure-invalid attempts are excluded from scores.
Across all 12 completed cohorts, 31 / 50 tasks (62.0%) on the frozen STRAT-50 panel were solved by at least one model:
anthropic/claude-opus-5.5— 27/50 (54.0%)google/gemini-4-argon-eap— 27/50 (54.0%)openai/gpt-6-astra— 23/50 (46.0%)openai/gpt-6.1-sol— 22/50 (44.0%)muse-code/muse-wonder-1.0— 19/50 (38.0%)openai/gpt-6-luna— 12/50 (24.0%)zai/glm-5.3— 12/50 (24.0%)muse-spark-1.3— 11/50 (22.0%)xai/grok-4.7— 9/50 (18.0%)mistral/mistral-small-latest— 4/50 (8.0%)mistral/mistral-medium-latest— 3/50 (6.0%)mistral/labs-leanstral-1-5-1(Leanstral 1.5) — 2/50 (4.0%)
STRAT-50 reports the direct observed solve rate on the frozen 50-task panel. It is not an unweighted estimate of FULL-263 performance. Benchmark v0.3 uses Lean 4.31.0.