OpenAI is releasing a brand new open-weight mannequin dubbed GPT-OSS that may be downloaded free of charge, be custom-made, and even run on a laptop computer.
The mannequin is available in two variants: 120-billion-parameter and 20-billion-parameter variations. The larger model can run on a single Nvidia GPU and performs equally to OpenAI’s current o4-mini mannequin, whereas the smaller model performs equally to o3-mini and runs on simply 16GB of reminiscence. Each mannequin variations are being launched right this moment through platforms like Hugging Face, Databricks, Azure, and AWS beneath the Apache 2.0 license, which permits them to be broadly modified for business functions.
That is OpenAI’s first open-weight mannequin in over six years, years earlier than the debut of ChatGPT. Till earlier this 12 months, CEO Sam Altman cited security issues as the primary cause for not releasing a follow-up. In the meantime, builders have flocked to open fashions because of their decrease price and customizability. In January, after the rise of DeepSeek, Altman said that OpenAI had “been on the unsuitable facet of historical past” by not releasing its personal open fashions.
Now, OpenAI is reasserting itself with an open-weight mannequin that it says can carry out reasoning duties, browse the online, write code, and function brokers through the corporate’s current APIs. “I believe lots of people are literally shocked to know that the overwhelming majority of our prospects are already utilizing plenty of open fashions,” Chris Prepare dinner, an OpenAI researcher, mentioned throughout a media briefing. “We needed to plug that hole and permit them to make use of our know-how throughout the board.”
On the security entrance, OpenAI says that GPT-OSS is its most rigorously examined mannequin thus far, and that it was examined with exterior security companies to make sure it doesn’t pose dangers in areas like cybersecurity and organic weapons. The mannequin’s chain of thought, or seen course of used to reach at a solution, is proven “to observe mannequin misbehavior, deception and misuse,” in response to an organization press launch. Its output is text-only and, like all of OpenAI’s fashions, GPT-OSS’s coaching information is undisclosed.
“The crew actually cooked with this one.”
OpenAI hasn’t shared benchmarks evaluating GPT-OSS to different open fashions like Llama, DeepSeek, or Google’s Gemma. Each variants of GPT-OSS carry out equally to OpenAI’s closed reasoning fashions on coding duties and checks like Humanity’s Final Examination. “These are unimaginable fashions,” mentioned OpenAI cofounder Greg Brockman. “The crew actually cooked with this one.”
OpenAI isn’t committing to a launch schedule for future variations of GPT-OSS, nevertheless it hopes that the mannequin will likely be utilized by smaller builders and corporations that need extra management over how their information is used. “We’ve all the time believed that for those who decrease the barrier to entry, then innovation simply goes up,” mentioned Brockman. “You let individuals hack, then they may do issues which might be extremely shocking.”