OpenAI’s New o3 and o4‑Mini Models, Push for Reasoning‑First AI
OpenAI has released two new large‑language models designed to “think” more deliberately, bringing multimodal problem‑solving and fuller tool autonomy to millions of ChatGPT users. The models, o3, billed as the company’s most capable reasoning engine, and the smaller, faster o4‑Minim, went live on 16 April for Plus, Pro and Team subscribers, with enterprise and education tiers to follow shortly. Introducing OpenAI o3 and o4-mini—our smartest and most capable models to date. For the first time, our reasoning models can agentically use and combine every tool within ChatGPT, including web search, Python, image Analysis , file interpretation, and image generation. pic.twitter.com/rDaqV0x0wE — OpenAI (@OpenAI) April 16, 2025 The road to release OpenAI originally planned to fold o3 into its forthcoming GPT‑5 release, but reversed course after internal testing suggested the model was ready for public use. The last‑minute pivot saw o3 and o4‑Mini launched as a pa...