Edit writing and code side-by-side in Canvas
features & settings
// what it does
Canvas opens a document or code panel beside the chat for work that needs revision. It appears automatically for longer outputs, or you type /canvas or say "open a canvas." You can edit directly, highlight a section to target edits, and use shortcuts — Adjust length, Change reading level, Add final polish for writing; Fix bugs, Add comments, Port to a language, Code review for code — plus run Python in-browser and restore earlier versions.
// prompt
> Open a canvas and draft a 600-word blog intro about [topic].> /canvas// gotcha
Canvas is not supported on the newest pro-series models (GPT-5.5 and later); if the shortcuts vanish, switch to a Canvas-compatible model. It is on Web, Windows, and macOS, with mobile still rolling out.