OpenAI CEO Sam Altman speaks during the Microsoft Build conference at Microsoft headquarters in Redmond, Washington, on May 21, 2024. Jason Redmond | AFP | Getty ImagesOpenAI will launch a new AI model, "GPT-4o mini," the artificial intelligence startup's latest effort to expand use of its popular chatbot, later on Thursday.The company called the new release "the most capable and cost-efficient small model available today," and it plans to integrate image, video and audio into it later.The mini ...