0

BioMysteryBench

Frontier

Molecular-biology reasoning benchmark; reports a hard split and accuracy on the human-solved subset.

Domain
biology
Published
Jun 2026
Notable for
Biology reasoning benchmark used at Claude Fable 5 launch.

Cite

Notes

Only stored in your browser.

Attribution

Leaderboard scores
Anthropic
Attribution policy →

Top score 83.9% by Claude Fable 5 - 3 models reporting (3 frontier)

Score history

2
75%81%88%94%100%May 26Jun 26Claude Opus 4.8Claude Fable 5

Top models

3
BioMysteryBenchBar chart with 3 bars. Highest value: Claude Fable 5 at 83.9.
3 models

FAQ

What is BioMysteryBench?
Molecular-biology reasoning benchmark; reports a hard split and accuracy on the human-solved subset.
What is the current top score on BioMysteryBench?
The top reported score is 83.9% by Claude Fable 5, across 3 models reporting (3 from frontier labs).