Leverage Integrated Writing and Code Blocks in Place of Canvas
Stop using the separate Canvas mode and use integrated content blocks.
Adopt the new writing and code blocks directly in your chat interface instead of relying on the sunsetting Canvas feature.
The Scenario
You are working on a collaborative coding or long-form writing project and want to see the output in a structured format without switching to a different UI mode.
Before & after
You would open the 'Canvas' interface, wait for it to load, and manage a separate window for your draft, which could take 2-5 minutes of setup and navigation.
Simply paste your materials into the chat; GPT-5.5 now handles writing and code blocks natively in the main window in seconds, eliminating the extra step.
The Prompt
I need to draft a [PROJECT_TYPE, e.g., Technical Specification]. Please generate this as a writing block so I can review the structure and code snippets directly within this chat. [PASTE_DETAILS_HERE]
As Canvas is being phased out for newer models, OpenAI is integrating 'writing blocks' and 'code blocks' directly into the chat flow to streamline the workflow.
Source
Model Release Notes | OpenAI Help Center"Writing and coding functionality is now supported directly in chat responses through writing blocks and code blocks."