OpenAI o1 is a high-performance AI model aimed at tackling complex multi-step tasks with superior accuracy. It is the successor to o1-preview and has been utilized to build agent applications that simplify customer support, optimize supply chain decisions, and forecast intricate financial trends. The o1 model encompasses production-ready features such as function calling, structured output, developer messages, and visual capabilities. The version o1-2024-12-17 has achieved new high scores in multiple benchmarks, enhancing cost efficiency and performance.