# Anthropic details planned Claude text watermarking system

_Monday, August 17, 2026 at 6:57 AM EDT · AI · Latest · Tier 2 — Notable_

![Anthropic details planned Claude text watermarking system — Primary](https://platform.theverge.com/wp-content/uploads/sites/2/2026/01/STKB364_CLAUDE_2_C_96d15c.jpg?quality=90&strip=all&crop=0%2C10.732984293194%2C100%2C78.534031413613&w=1200)

Anthropic said Friday it plans to apply invisible watermarks to Claude-generated text using a version of Google DeepMind's open-source SynthID-Text approach.

The system selects among low-stakes likely word choices using a keyed source of randomness, leaving a pattern detectable by holders of the key but not readers. Anthropic said the feature, alongside C2PA support for Claude-processed images, is being introduced to meet EU AI Act transparency obligations.

It said text marking will not raise user costs or practically affect output quality.

## Sources

- [The Verge](https://www.theverge.com/ai-artificial-intelligence/980869/anthropic-claude-watermarks-synthid-text-system)

---
Canonical: https://techandbusiness.org/newswire/wOog4Ou2ZWoqPZmobZTlIz
Retrieved: 2026-08-17T13:51:28.931Z
Publisher: Tech & Business (techandbusiness.org)