humans&'s Persimmon Fools AI Detectors at Human Rates With 550B Parameters

This story is from 2026-09-10. It is preserved in the archive; the latest stories are on the live feed.

humans& releases Persimmon, a 550B user model built to simulate real people in group chats, fooling AI judges 20 percent of the time.

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2026-09-10 18:23 · AlphaSignal
humans&'s Persimmon Fools AI Detectors at Human Rates With 550B Parameters

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