AI article
Claude's Watermark Now Covers Sonnet 4.6 and Opus 4.7. Sonnet's Temperature Can Drop It
Community description: Since November 3, Mythos 5, Opus 4.7 and Sonnet 4.6 text carries Anthropic's watermark. On Sonnet 4.6, a custom temperature may leave it out.
Dev.to | Nov 4, 2026 | Gabriel Anhaia
Automated excerpt
That day's entry in the Claude API release notes opens with "Text generated by Claude Mythos 5, Claude Opus 4.7, and Claude Sonnet 4.6 carries Anthropic's text watermark," on the platforms Anthropic lists. The November 3 entry moves three of those older models over: Mythos 5, Opus 4.7 and Sonnet 4.6 (release notes). The support page lists the Claude apps, Claude Code, Claude Cowork and Claude Tag as well, worldwide.
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