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OpenAI Announces o3 and o4-mini, It Claims Are the Smartest Yet

         

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9:35 am on Apr 17, 2025 (gmt 0)

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OpenAI has said its o3 and o4-mini are its smartest models yet released.

For the first time, our reasoning models can agentically use and combine every tool within ChatGPT—this includes searching the web, analyzing uploaded files and other data with Python, reasoning deeply about visual inputs, and even generating images. Critically, these models are trained to reason about when and how to use tools to produce detailed and thoughtful answers in the right output formats, typically in under a minute, to solve more complex problems.


[openai.com...]