PaperAgent

Aug 16, 2026 · Artificial Intelligence

How Anthropic’s Claude Watermark Works: A Technical Deep Dive

Anthropic’s FAQ explains that Claude’s invisible watermark, built on DeepMind’s SynthID‑Text method, replaces the model’s random seed with a key‑driven deterministic source, leaving output quality unchanged while making long‑form text detectable but short or factual passages hard to trace.