Anthropic now applies its text watermark to output from Claude Mythos 5, Claude Opus 4.7, and Claude Sonnet 4.6 on the platforms listed in its AI-generated content marking documentation. On Claude Sonnet 4.6, requests that set temperature, top_p, or top_k to a non-default value may produce text without the watermark.
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What to doReview Anthropic's text watermark documentation if watermarking of generated output matters to your application, and note that non-default sampling parameters on Claude Sonnet 4.6 may omit it.
- Provider
- Anthropic
- Source
- platform.claude.com