# Anthropic Claude gets EU AI Act watermarking

> Anthropic says every Claude model released after August 2, 2026 will carry an invisible, SynthID-style watermark in its text output. The mark is designed to survive copy and paste and may persist through light editing, and it applies across the whole platform, including the API, Claude Code, Claude Cowork, and Claude Tag. Files get C2PA provenance data on top. The move is a direct response to the EU AI Act's transparency code, which took effect August 2 and requires AI-generated or edited content to be machine-detectable. Non-compliance is not cheap: fines can reach 15 million euros or 3 percent of global annual turnover. Text watermarking is genuinely hard, since language has far less room to hide a signal than an image, so persistence through editing is a real claim to watch. If it works, it hands teachers, publishers, and platforms a way to flag machine text without guessing. If it degrades easily, it becomes a compliance checkbox more than a reliable detector.

_Section: [Daily AI Updates](https://www.wortins.com/daily-ai) · Source: TechCrunch · Published Thursday, August 20, 2026_

## Wortins' read

Anthropic says every Claude model released after August 2, 2026 will carry an invisible, SynthID-style watermark in its text output. The mark is designed to survive copy and paste and may persist through light editing, and it applies across the whole platform, including the API, Claude Code, Claude Cowork, and Claude Tag. Files get C2PA provenance data on top. The move is a direct response to the EU AI Act's transparency code, which took effect August 2 and requires AI-generated or edited content to be machine-detectable. Non-compliance is not cheap: fines can reach 15 million euros or 3 percent of global annual turnover. Text watermarking is genuinely hard, since language has far less room to hide a signal than an image, so persistence through editing is a real claim to watch. If it works, it hands teachers, publishers, and platforms a way to flag machine text without guessing. If it degrades easily, it becomes a compliance checkbox more than a reliable detector.

## 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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