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ProgramBench hidden-test pass rate after episode 1

Program-reconstruction hidden-test pass rate after the first of five sequential long-context episodes.

1 models

Higher is better.

  1. 1Claude Opus 5Anthropic83.0
Higher is better. Bar colour: blue proprietary, orange open weights, green other.

About this benchmark

Metric
Hidden-test pass rate after episode 1
Tasks
166 golden program-reconstruction tasks
Authors
Yang et al. (2026)

Scores are as reported by model developers or evaluators and may use different settings (for example reasoning effort or tools). Compare with care.