model update

OpenAI has updated GPT-5.5 Instant, ChatGPT's default model since May, to better track context across conversations and adapt when users clarify or modify questions. The update also adds location-aware recommendations and improved handling of complex multi-part queries.

OpenAI is releasing a third behavioral update to GPT-5.5 Instant, its most-used ChatGPT model. The company claims the update makes the model better at understanding question intent and handling complex constraints, with improved shopping and local recommendations.

OpenAI released GPT-5.5, which completes tasks at the same difficulty level faster than GPT-5.4 while using significantly fewer tokens. The model is available to ChatGPT Plus, Pro, Business, and Enterprise users, with API access delayed due to required safeguards.