OpenAI trains GPT-4o to work in canvas, a side-by-side writing and coding surface in ChatGPT, as an early beta.
OpenAI launched canvas in ChatGPT on October 3, 2024, opening a separate window beside the chat for writing and coding projects[1][2]
Selected as "GPT-4o with canvas" or triggered by writing "use canvas"; it may open automatically for longer outputs, and users can highlight sections for the model to edit[2]
Beta for ChatGPT Plus and Teams first, Enterprise and Edu the following week, and free users planned once out of beta[2]
Writing tools include a length slider, tone edits and translation; coding tools include "add comments" and a "review code" button with approve/decline[2]
Compared with Anthropic's Artifacts and Cursor; PM Daniel Levine called it "a more natural interface for collaborating with ChatGPT"[2]
Later, canvas was no longer available in GPT-5.5 Instant or GPT-5.5 Thinking (May 28, 2026), which use writing and code blocks in chat instead[1]
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techcrunch.com· Published Oct 3, 2024· Starts Oct 3, 2024· 6% of score
TechCrunch reports canvas launching that day.
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