PANews reported on February 13 that according to the GPT-4.5 and GPT-5 roadmap released by OpenAI CEO Sam Altman, GPT-4.5 (internal codename Orion) will be OpenAI's last non-"Chain-of-Thought" model, which is expected to be launched in the coming weeks or months. After that, OpenAI will integrate the o series and GPT series models to make them use tools more intelligently and adapt to different task requirements.

GPT-5 will combine the o3 model and integrate voice, Canvas, search, and in-depth research. ChatGPT free users will have unlimited access to the standard intelligent version of GPT-5, while Plus and Pro users will have access to a more intelligent version of GPT-5.