OpenAI launched its cost-efficient o3-mini model in the same week that DeepSeek's R1 disrupted the tech industry.

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The o3-mini model can be used on the free tier of ChatGPT by selecting the "Reason" feature in ChatGPT, with rate limits similar to GPT-4o. Additionally, OpenAI has increased message limits for Plus ...

Chinese startup DeepSeek's artificial intelligence challenges major U.S. tech companies like Meta and OpenAI. Here's why.

OpenAI has launched a new 'reasoning' AI model, o3-mini, the successor to the AI startup's o1 family of reasoning models.

OpenAI just released o3-mini, a reasoning model that’s faster, cheaper, and more accurate than its predecessor.