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.
