Every time OpenAI releases a new model for ChatGPT, the buzz it generates makes me think I may be missing out if I don’t switch. The latest update is GPT-5.5 Instant, and it’s the default model for all ChatGPT users. It’s paired with an upgraded memory system that shows you which past conversations and saved memories the model pulled from to shape its response. That’s a really nice feature that felt long overdue. With the new memory transparency and claims that hallucinations have been reduced by over 50% in certain domains, it’s an alluring update for those who were already on the fence about ChatGPT.