# Anthropic says it will watermark text generated by its AI models

> Anthropic says every Claude model released after August 2, 2026 will automatically watermark the text it generates, using a technique called SynthID Text. The marks are invisible to readers but detectable by software, and they are designed to survive copying, pasting and light editing, though a full rewrite will wash them out. The move is a direct response to the EU AI Act's transparency rules, specifically the Article 50 obligations that took effect the same day. Watermarking text is much harder than watermarking an image, because language has far less room to hide a signal without changing meaning. That Anthropic is shipping it at all is a sign of how seriously the compliance deadline is being taken, and it gives teachers, editors and platforms a possible tool for spotting machine-written content. The honest caveat is that no watermark is bulletproof, determined users can strip it and rival models may not carry one. Still, this is one of the first concrete answers to a question the whole industry has been dodging, how do you tell, at scale, what a machine wrote.

_Section: [Daily AI Updates](https://www.wortins.com/daily-ai) · Source: TechCrunch · Published Friday, August 21, 2026_

## Wortins' read

Anthropic says every Claude model released after August 2, 2026 will automatically watermark the text it generates, using a technique called SynthID Text. The marks are invisible to readers but detectable by software, and they are designed to survive copying, pasting and light editing, though a full rewrite will wash them out. The move is a direct response to the EU AI Act's transparency rules, specifically the Article 50 obligations that took effect the same day. Watermarking text is much harder than watermarking an image, because language has far less room to hide a signal without changing meaning. That Anthropic is shipping it at all is a sign of how seriously the compliance deadline is being taken, and it gives teachers, editors and platforms a possible tool for spotting machine-written content. The honest caveat is that no watermark is bulletproof, determined users can strip it and rival models may not carry one. Still, this is one of the first concrete answers to a question the whole industry has been dodging, how do you tell, at scale, what a machine wrote.

## Source

[Read the full story at TechCrunch](https://techcrunch.com/2026/08/11/anthropic-says-it-will-watermark-text-generated-by-its-ai-models/)

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