Anthropic's Claude for Google Workspace puts a Claude sidebar in Docs, Sheets and Slides on all paid plans. The safety design is careful. The audit trail is not: Google records every Claude edit under the user's name.
OpenAI began watermarking AI text under the EU AI Act. Its own numbers show the limits: rewrite a quarter of the words and detection falls from 92% to 17%, and structured content like math is much harder to catch. The detector isn't public, and a missing watermark proves nothing.
Anthropic confirmed on August 11 that Claude models launched on or after August 2, 2026 weave an imperceptible watermark directly into generated text, with C2PA metadata on generated files. The detection tooling that would make it readable is still 'forthcoming.' Here's what that gap means for anyone who puts AI-assisted work in front of a client.