Claude Watermark 11/3 Replaces Previous Version: Check 4 Models Yourself; Only Included with Default Settings
According to an Anthropic email seen by The Decoder, Claude text watermarking covers four older models—Mythos 5, Opus 4.7, Opus 4.6, and Sonnet 4.6 starting today, November 3. Anthropic says the watermark adds no cost or tokens. The detection API is still in private preview, so regular users can’t check for it yet. This isn’t…