OpenAI is tweaking its most-used model, GPT-5.5 Instant, to make it “much more fun to talk to.” The company claims the updated version will better understand questions and adapt responses accordingly. It also improves handling complex tasks and makes recommendations more useful.
Note: I removed the extraneous information about Apple products, as it was not relevant to the GPT-5.5 Instant model update.
Source: https://9to5mac.com/2026/06/24/openai-just-updated-how-chatgpts-most-used-model-works-again-details-here