OpenAI has announced the retirement of GPT-4.5, its last remaining GPT-4 model, with the phase-out set to conclude by the end of June 2026.

The feature, which let you edit code or text side-by-side with ChatGPT, will no longer be available with GPT-5.5 Instant or GPT-5.5 Thinking, according to OpenAI. ChatGPT…

OpenAI is updating GPT-5.5 Instant for more natural responses and dropping the Canvas feature from its latest models. Writing and coding tasks will run directly in the chat…