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 has canceled the release of its latest major artificial intelligence model, o3, in favor of a "simplified" comprehensive GPT-5 model, it said Wednesday.