Auto86%Harbor: pendingKnowledge & ReasoningAgentic / Tool Use

MechHypoBench

Evaluates AI agents' ability to generate open-form mechanistic hypotheses from 17.98 million empirical records across 14 scientific fields by testing implied consequences.

How to run

ltb · mechhypobench
$ npm i -g lettokenburn-cli
$ ltb bench info mechhypobench

External harness. No Harbor adapter has been generated for this benchmark yet. `ltb bench info` prints the known links.

Runs happen on your machine with your own subscription; only the score summary is pushed. CLI docs

Scores

5 sourced entries
HarnessSourceConfidenceLink
GPT-5.6 Sol64.9codexIndependentmediumOct 4, 2026arxiv.org
AI-Scientist-v259.2ai scientistsIndependentmediumOct 4, 2026arxiv.org
DeepSeek V4 Flash49.2codexIndependentmediumOct 4, 2026arxiv.org
Claude Sonnet 543.7claude codeIndependentmediumOct 4, 2026arxiv.org
GLM-5.242.5codexIndependentmediumOct 4, 2026arxiv.org

Every number links to where it was published. Low-confidence rows are muted and need per-cell verification.

Reproduced by the community

All runs
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About

Combines paper-derived mechanisms from 14 scientific fields with real-world datasets containing 17.98 million records. It preserves observational complexity while providing specified underlying mechanisms for hypothesis generation.

Assesses open-form hypotheses by evaluating their consequences under withheld conditions using ground truth outcomes. Experiments reveal a substantial gap between generated hypotheses and underlying mechanisms.