Model13h ago
OpenAI Updates GPT-5.5 Instant, Retires Older Models
August 2026 marks the final deadline for o3 and GPT-4.5 as OpenAI retires both models. The company also updated GPT-5.5 Instant for more natural readability. It removes the Canvas feature, forcing writing and coding tasks back into the standard chat interface. This is a minor iterative shift in user experience.