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OpenAI Just Released Its First Open-Weight Models Since GPT-2


The models, gpt-oss-120b and gpt-oss-20b, represent a major shift for the AI company.

"We're excited to make this model, the result of billions of dollars of research, available to the world to get AI into the hands of the most people possible," said OpenAI CEO Sam Altman in an emailed statement. Rather than undercutting OpenAI's proprietary models with a free option, cofounder Greg Brockman sees this release as “complementary” to the company’s paid services, like the application programming interface currently used by many developers. In addition to the evaluations OpenAI typically runs on its proprietary models, the startup customized the open-weight option to see how it could potentially be misused by a “bad actor” who downloads the tool.

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