Anthropic's watermarking announcement is a compliance move dressed as a trust signal. On 14 August 2026 the company said it would embed invisible watermarks into every output from its Claude models, covering both text and generated files.
Most users will enable this without reading the fine print, and that is the problem. OpenAI released the Apple Messages plugin for the ChatGPT desktop app on 20 August 2026, giving the AI the ability to read, search and send iMessages, SMS and RCS conversations on Apple silicon Macs.