AI NewsClaude Text Watermark Explained: How Anthropic Will Detect AI Content

Claude Text Watermark Explained: How Anthropic Will Detect AI Content

1:27 AM IST · August 18, 2026

Anthropic has provided more details about the text watermarking system it is introducing for Claude, explaining how the invisible marker will work and what it can reveal. The company says the system will rely on word-selection patterns rather than adding characters or other visible elements to generated text. The watermark will not affect the quality, meaning or readability of Claude's responses and will not require additional tokens. Anthropic is implementing the technology as part of its compliance with the EU AI Act.