Writing Blocks, the Successors to Canvas

From Canvas to Writing Blocks

Canvas long served as ChatGPT’s writing space: an editable document that opened alongside the conversation. On May 28, 2026, OpenAI removed it from current models. Writing and coding now happen directly within responses using writing blocks and code blocks. Canvas remained available for a time with older models until they were retired. If you were used to typing “Open Canvas,” this lesson shows you what replaces it and why the core workflow hasn’t changed: you edit what you know, and ChatGPT handles the drafting.

What Is a Writing Block?

A writing block is an editable area within a response that contains a draft: an email, a message, a social media post, or a document. When ChatGPT drafts text you’ll likely edit or reuse, it automatically places it in a writing block. You can also request one with prompts like:

“Draft a reply to my manager’s email as an editable draft I can modify.”

“Turn these notes into a one-page document.”

Available actions vary by plan, device, workspace, model, and deployment. Don’t be surprised if you don’t see the exact same buttons as a colleague.

What You Can Do in a Block

Your first habit should be direct editing: click in the text and type, just like in a word processor. Fixing a proper name, replacing a date, or deleting a sentence—all this happens manually, without a prompt. Your second habit should be targeted revision: select a passage, then ask ChatGPT to revise it without touching the rest. You can also ask it to rewrite the entire draft.

Beyond these two actions, the block offers features depending on your account: copying the text; opening a full-screen editing view, which is more comfortable for long documents; undoing or redoing recent AI edits; sending certain email drafts directly from ChatGPT or opening them in your email client; and saving certain document drafts to your Library. Standard formatting is supported: bold, italics, headings, links, bulleted or numbered lists, and checkboxes.

Your edits save with the conversation after a short delay, and your next request starts from your latest version. One exception to note: in a temporary chat, these edits may not persist after the session ends.

What’s Changed from Canvas

The block lives inside the response instead of a separate panel, and there’s no longer an “Open Canvas” button to hunt for. An editable draft appears when the text calls for it or when you ask for one. Canvas shortcuts, like sliders for length or reading level, have no guaranteed equivalent: phrase the instruction yourself, such as “cut this in half” or “make this passage accessible to a high schooler.” For long documents built collaboratively or meant to last, other tools take over: Space pages and files created by ChatGPT Work, which Lesson 4 covers.

Beginner Pitfalls

The most common mistake by far is prompting for everything: “replace Dupont with Martin” when a click in the block and two seconds of typing would suffice. The second is requesting a change without selecting the relevant passage: without a specific target, ChatGPT may rewrite the entire draft, including parts you already adjusted. The third is working on an important draft in a temporary chat, only to find your edits weren’t saved.

Try It Yourself

Your first writing block. Open a new conversation and ask: “Write me a follow-up email for a client who hasn’t responded in two weeks, as an editable draft.” In the resulting block, manually correct the client’s name and the date. Next, select the last paragraph and ask: “Make this paragraph more direct and assertive.” Undo this revision, then redo it. Finally, open the block in full screen and copy the final text. You’ll have practiced the three core actions: direct editing, targeted revision, and controlling AI edits.

Official sources: Working with writing blocks and code blocks in ChatGPT (OpenAI Help Center: creation, editing, formatting, saving) · ChatGPT release notes (Canvas removal, May 28, 2026)

Key Takeaways

• Canvas was removed from current models on May 28, 2026: writing now happens in writing blocks within responses
• ChatGPT creates a block when text is meant to be edited or when you request one
• Edit directly what you know; select a passage for targeted revision
• Depending on your account, the block offers: full screen, undo AI edits, email sending, and saving to Library
• Edits save with the conversation, except in temporary chats