OpenAI Rolls Out GPT-5.5 Instant as ChatGPT's New Default, Slashing Hallucinations and Emoji Overload
OpenAI rolls out GPT-5.5 Instant as ChatGPT's new default model, delivering 52.5% fewer hallucinations on high-stakes medical, legal, and financial prompts, dramatically reduced emoji overuse, and smarter memory features that transparently show users which past conversations and files shaped each response.