GPT-5.5 Instant Update; ChatGPT Canvas Discontinued; o3 and GPT 4.5 Retiring
OpenAI has announced updates to its GPT-5.5 Instant model, enhancing response quality and readability. The canvas feature will be discontinued, with writing and coding functionalities integrated into chat responses. Additionally, older models like OpenAI o3 and GPT-4.5 will be retired to focus on newer models.
- ▪The GPT-5.5 Instant update improves response style and quality for better conversational flow.
- ▪Canvas will no longer be available, with writing and coding now supported directly in chat responses.
- ▪OpenAI o3 will be retired on August 26, 2026, and GPT-4.5 on June 27, 2026.
Opening excerpt (first ~120 words) tap to expand
Model Release NotesUpdated: 4 hours agoGPT-5.5 Instant Update (May 28, 2026)We’re updating GPT-5.5 Instant in ChatGPT and the API to improve response style and quality. It’s now easier to read, more natural in everyday conversations, and better paced in practical help tasks, with fewer overly long or bullet-heavy responses.With this update, canvas will no longer be available in GPT-5.5 Instant or GPT-5.5 Thinking. Writing and coding functionality is now supported directly in chat responses through writing blocks and code blocks.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at OpenAI Help Center.
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