Story perspectives

Anthropic’s Claude watermark prompts multiple users to cancel plans

8/15/2026

Summary

Story summary

Anthropic added a watermark to Claude text on August 2 that embeds in text and does not alter meaning.
Arturo Villarroya canceled his Claude Max plan on Wednesday over the marker.
Santiago Alessandro Rivera Martínez ended his subscription, citing proprietary software dependence.
Vladislav Rajtmajer quit on Tuesday fearing the watermark could trigger penalties.
Anthropic said the watermark complies with the EU AI Act and will be detectable via an API.

1 of 1

Story summary

Anthropic added a watermark to Claude text on August 2 that embeds in text and does not alter meaning.
Arturo Villarroya canceled his Claude Max plan on Wednesday over the marker.
Santiago Alessandro Rivera Martínez ended his subscription, citing proprietary software dependence.
Vladislav Rajtmajer quit on Tuesday fearing the watermark could trigger penalties.
Anthropic said the watermark complies with the EU AI Act and will be detectable via an API.