Known strict training overlaps were filtered and training-file hashes checked. Weak/semantic overlap and foundation-model pretraining contamination are not ruled out; HLE training overlap has not been independently cleared. Benchmark samples informed development, so this is not a sealed evaluation.
The complete 54.59 run used a frozen 256-row XL-dev calibration fit after excluding known DI matches. No DI labels or DI index score were used to fit it. HLE calibration screening found no additional match.
The earlier 54.02 sample used the previous calibration table with known overlaps and remains historical. Old v1.0 disclosures apply to its own weights and are preserved under v1.0-legacy.
Full-run response artifacts are unchanged. No request payloads or generated reasoning text are included. Official maintainer serial latency validation and leaderboard admission remain pending.
v1.2 (checkpoint 02600-f19)
v1.2 was trained only on perturbed and unperturbed copies of v1.1's own training questions. A Decision Index blocklist scan of its training and hold-out rows found 0 strict matches (329 weak alerts, all states shorter than 8 words).
JevAdvBench is evaluation-only. An 8-gram overlap check of every inserted text against every JevAdvBench string (the clean questions and all 9,744 attacked variants) found 0 hits. The perturbation kinds were chosen after v1.1's per-attack JevAdvBench results were known, so the benchmark's attack families informed the training design; its texts did not. Robustness to other attack types is not measured.
The JevBench public items were again a development scoreboard: v1.2 had a pass line of at least 201/231 set before training. They were never training data.
The 54.59 complete-suite Decision Index result and the files under evaluation/ other than evaluation/v1.2/ belong to v1.1. v1.2 has only a one-pass read of a 6,948-request sample.
v1.2 uses v1.1's temperature table unchanged. No benchmark labels were used to fit it.
