Model WarsApril 16, 2025via OpenAI Blog

Introducing OpenAI o3 and o4-mini

Why it matters

OpenAI's next-generation reasoning models with full tool access represent a significant capability leap. This is a direct signal of where frontier AI is heading—toward more autonomous, multi-step task execution.

Key signals

  • OpenAI releases o3 and o4-mini models
  • Both models include full tool access capability
  • Described as 'smartest and most capable models to date'
  • Published April 16, 2025
  • Positions OpenAI's reasoning tier ahead of competitors

The hook

OpenAI just released o3 and o4-mini. Here's what changes for builders.

Our smartest and most capable models to date with full tool access
Relevance score:95/100

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