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Anthropic announces watermark detection API that will let third parties detect Claude's AI texts

Technology · en

Anthropic announces watermark detection API that will let third parties detect Claude's AI texts

The Decoder · Aug 14, 2026, 9:29 PM UTC

Anthropic will soon offer a watermark detection API that lets third parties check whether text was written by Claude. The technology builds on Google's SynthID method and tweaks the randomness during word selection without affecting text quality, Anthropic says. The approach has limits with fact-heavy text, code, and heavy rewriting.…