Following the latest launch of a brand new household of GPT-4.1 fashions, OpenAI launched o3 and o4-mini on Wednesday, its newest addition to the present line of reasoning fashions. The o3 mannequin, previewed in December, is OpenAI's most superior reasoning mannequin to this point, whereas o4-mini is a smaller, cheaper, and sooner mannequin.
Meet o3 and o4-mini
Merely put, reasoning fashions are skilled to "suppose earlier than they converse," which ends up in an extended time to course of the immediate however higher-quality responses. In consequence, like older fashions, o3 and o4-mini present sturdy efficiency in coding, math, and science duties. Nonetheless, in addition they have an vital new addition: Visible understanding.
Additionally: Methods to use ChatGPT: A newbie's information to the most well-liked AI chatbot
OpenAI o3 and o4-mini are OpenAI's first fashions to "suppose with photos." OpenAI explains that this implies the fashions don't simply see a picture; they’ll really use the visible data of their reasoning course of. Customers can even now add photos which are low high quality or blurry, and the mannequin will nonetheless be capable of perceive them.
One other main first is that o3 and o4-mini can independently use all ChatGPT instruments, together with net looking, Python, picture understanding, and picture era, to raised resolve advanced, multi-step issues. OpenAI says this capability permits the brand new fashions to take "actual steps towards appearing independently."
Additionally: The highest 20 AI instruments of 2025 – and the #1 factor to recollect if you use them
A latest report from The Info claimed the brand new fashions would synthesize data from totally different fields and topic experience after which use that information to counsel new, revolutionary experiments. Insider sources who’ve examined the mannequin mentioned these experiments would embody many advanced matters, similar to nuclear fission or pathogen detection, in response to the report. OpenAI has but to verify this.
Methods to entry the brand new fashions
OpenAI o3 and o4-mini can be found right now to subscribers, together with ChatGPT Plus, Professional, and Group customers. The fashions will seem within the mannequin picker as o3, o4-mini, and o4-mini-high, changing o1, o3-mini, and o3-mini-high. Professional customers will be capable of entry o3-pro in just a few weeks, however till then, they are going to nonetheless have entry to o1-pro. The fashions are additionally accessible for builders through the API.
Additionally: ChatGPT just made it easy to find and edit all the AI images you've ever generated
To ease considerations about mannequin security, OpenAI shared that each of the brand new releases have been stress-tested underneath its security program and evaluated underneath its up to date Preparedness Framework.
Bonus: Codex CLI
OpenAI has additionally launched Codex CLI, an open-source coding agent that runs domestically in customers' terminals. It’s meant to supply customers with a easy and clear technique to join AI fashions, together with o3 and o4-mini (with assist for GPT-4.1 coming quickly), to their very own code and duties operating on their pc.
Additionally: OpenAI to launch AI models that can think up their own experiments, says report
OpenAI introduced the launch of a $1 million initiative effectively. It's meant to assist early tasks by awarding grants in $25K increments through API credit.
Need extra tales about AI? Sign up for Innovation, our weekly e-newsletter.