OpenAI introduced GPT-5.5 Instant as an update to ChatGPT’s default model, describing improvements in accuracy, clarity, and control over personalization. It addresses everyday requests rather than one specialized profession.

Context

Daily quality is built from small moments: understanding the question, avoiding unnecessary detail, and recalling only relevant context. Personalization is most useful when people can understand and change what informs it. An unexpectedly specific answer is less helpful if the user cannot tell where its assumptions came from.

Sources & authors

  1. GPT-5.5 Instant: smarter, clearer, and more personalized
    OpenAI · May 5, 2026
OpenAImodels