Documents now keep revision history. Browse snapshots and restore an earlier version anytime. The document editor has a real toolbar with links, a comments button, and a placeholder. Claude Sonnet 5.5 joins the model catalog. .xlsx workbooks now preview in the chat file drawer. All Chats got a layout refresh and shows live task activity. Serply joins the web search providers as a bring-your-own-key option. Bug fixes and stability improvements to keep your assistant running smoothly.