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OpenAI o4-mini is a generative pre-trained transformer model created by OpenAI. On April 16, 2025, the o4-mini model was released to all ChatGPT users (including free-tier users) as well as via the Chat Completions API and Responses API.[1][2][3][4]
Additionally, OpenAI introduced the o4-mini-high model, which was made available exclusively to paid-tier ChatGPT users. The high model offers more advanced features, including higher response accuracy and faster processing times.[5]
Unlike earlier models, o4-mini is capable of processing both text and images. It also allows to perform tasks like analyzing whiteboard sketches during its "chain-of-thought" phase.[6]
o4-mini API providers says that it's designed to enhance decision-making across sectors by enabling utilities to forecast demand and analyze infrastructure data, supporting healthcare through extraction and interpretation of medical records and diagnostics, and assisting financial institutions with real-time regulatory compliance and risk assessment through automated document analysis and data processing.[7]
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