With both ChatGPT and OpenAI’s API, the company plans to “release GPT-5 as a system that integrates a lot of our technology, including o3,” Altman says, adding that “we will no longer ship o3 as a standalone model.” OpenAI first teased o3 in December and launched o3-mini in January.

OpenAI CEO Sam Altman has laid out a roadmap for the release of new AI models: GPT-4.5 and GPT-5. He promised a simpler AI experience in future, with plans to unify OpenAI's models. Sam Altman, CEO of OpenAI,

OpenAI will integrate “o3” into GPT-5 instead of releasing it separately, streamlining adoption while signaling a shift toward fewer, more controlled AI models amid rising competition and cost pressures.