Anthropic releases Claude Fable 5.1 and Mythos 5.1
Fable 5.1 scores 52.6% on the new Terminal-Bench-Science 0.1 benchmark, up from 24.7% for Fable 5. It offers five reasoning levels (low to max) and carries Anthropic's statistical text watermark.
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same day · 3 reports · 2 community posts · from Sep 1
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