OpenAI has finalised a version of its new reasoning AI model o3 mini. The ChatGPT-maker has considered user feedback and, consequently, plans to release the application programming interface (API) and ChatGPT simultaneously.OpenAI has finalised a version of its new reasoning AI model o3 mini. The ChatGPT-maker has considered user feedback and, consequently, plans to release the application programming interface (API) and ChatGPT simultaneously.