
OpenAI Updates ChatGPT with GPT-5.5 Instant, Fewer Hallucinations
OpenAI has updated ChatGPT to use GPT-5.5 Instant as the default model, cutting hallucinations by 52.5% on topics like medicine, law, and finance. The model shows gains across benchmarks in math, science, and visual reasoning. A new memory sources feature lets users see and edit the personal context used in responses.
