The models, gpt-oss-120b and gpt-oss-20b, represent a major shift for the AI company.
OpenAI just dropped its first open-weight models in over five years. The two language models, gpt-oss-120b and gpt-oss-20b, can run locally on consumer devices and be fine-tuned for specific purposes. For OpenAI, they represent a shift away from its recent strategy of focusing on proprietary releases, as the company moves towards a wider, and more open, group of AI models that are available for users.
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. “We actually fine-tuned the model internally on some of these risk areas,” said Eric Wallace, a safety researcher at OpenAI, “and measured how high we could push them.” In OpenAI’s tests, the open-weight model did not reach a high level of risk, as measured by its preparedness framework.
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