registryreasoning-chainclaude-fable-5

Multi step reasoning

Arrive at a verifiable final answer across several dependent steps. Only the final answer is scored, so a lucky guess with broken work still fails the harder cases.

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Order
Entries are ordered by their public score on the selected model version. The interval bar shows the 95 percent confidence range, so two entries whose bars overlap are not meaningfully apart.
Holdout
Thirty percent of every suite is withheld and never published. A large gap between the public and holdout score is the signal that an entry was tuned to the visible cases.
Freshness
An entry is fresh while its newest run targets the current version of the selected model. Anything older is marked and queued for a rerun.