OpenAI o4-mini

OpenAI o4-mini is a smaller reasoning model released in April 2025, designed to deliver advanced reasoning capabilities at significantly reduced cost and latency. As part of OpenAI's o-series reasoning models, o4-mini achieves remarkable performance for its size, particularly in mathematics, coding, and visual tasks. Priced at $1.10 per million input tokens and $4.40 per million output tokens, o4-mini offers approximately 10x cost reduction compared to the flagship o3 model, making advanced reasoning accessible for high-volume applications. The model features a 200K token context window and supports tool use including browsing, Python execution, and image inputs. o4-mini represents OpenAI's strategy of democratizing reasoning capabilities through smaller, more efficient models. While not matching o3's performance on the most complex tasks, o4-mini delivers superior results compared to GPT-4.1 nano and other general-purpose models at a fraction of the cost. The model excels at tasks requiring logical reasoning, mathematical problem-solving, and code analysis, making it ideal for applications where reasoning quality matters but the extreme capabilities of o3 aren't necessary. With its 200K context window, o4-mini can handle substantial documents and codebases while maintaining cost efficiency.