Major Frontier Model Providers Adopt Watermarking Tech to Comply with EU Regulation

Starting August 2, 2026, major AI model providers like Anthropic and Google implemented statistical text watermarking to comply with the EU AI Act requiring machine-detectable synthetic content. This watermarking subtly biases token selection during text generation without affecting output quality or latency. The rollout also includes cryptographic metadata for images and other media, prompting rapid development of watermark removal tools by open-source communities.