Anthropic’s LLM watermarking

Source: Scottaaronson.blog· Scott· August 22, 2026
Anthropic’s LLM watermarking

So yeah, Anthropic has announced that it’s now watermarking the outputs of Claude, using a scheme based on Google’s SynthID, which is in turn based on the Gumbel Softmax scheme that I proposed at OpenAI back in 2022—as far as I know, the first LLM watermarkin…

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