Despite what its name suggests, OpenAI hadn’t released an “open” model—one that includes access to the weights, or the numerical parameters often described as the model’s brains—since GPT-2 in 2020.

OpenAI CEO Sam Altman said Friday the company is delaying the release of its open model, which was already pushed back a month earlier this summer. OpenAI had planned to release the model next week, ...

OpenAI CEO Sam Altman said China's open-source models drove the company to release its open-weight models earlier this month. "It was clear that if we didn't do it, the world was gonna be mostly built ...

Open artificial intelligence models that developers are able to use with few or no restrictions are critical to a competitive ...

Microsoft is making OpenAI’s new free and open GPT model, gpt-oss-20b, available to Windows 11 users via Windows AI Foundry, the tech giant’s platform that lets users tap AI features, APIs, and ...

Living up to its name, OpenAI has released not one but two new open-weight AI models after promising to deliver a new open-weight model earlier this year. The two models, gpt-oss-20b and gpt-oss-120b, ...

Cerebras Systems Inc., a startup providing ultra-fast artificial intelligence inference, today announced support for OpenAI’s newly released 120 billion-parameter open-weight reasoning model, ...

When DeepSeek released its DeepSeek reasoning model in early 2025, it tanked the US stock market. The Chinese startup showed a new way of training frontier AI that didn't rely on access to expensive, ...

SUNNYVALE, Calif. & SAN FRANCISCO--(BUSINESS WIRE)--Cerebras Systems today announced inference support for gpt-oss-120B, OpenAI’s first open-weight reasoning model, now running at record-breaking ...