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.

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 ...

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, ...

Microsoft-backed (NASDAQ:MSFT) OpenAI launched a pair of open weight models today, which can compete with other open models such as Google's (NASDAQ:GOOG)(NASDAQ:GOOGL) Gemini CLI and DeepSeek's ...

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, ...

The grand repository for open-source AI models is Hugging Face, which now maintains four million open-source AI models, built by and serving a community of 10 million AI developers. Also: Google's new ...

As AI systems become more capable, speech is fast becoming the default way we communicate with machines. French AI startup Mistral has jumped into the audio race with its first open model, aiming to ...

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 ...

GPT-OSS is OpenAI’s first open-weight model in six years. GPT-OSS is OpenAI’s first open-weight model in six years. OpenAI is releasing a new open-weight model dubbed GPT-OSS that can be downloaded ...

Microsoft’s partnership with OpenAI could be facing yet another test. Microsoft’s partnership with OpenAI could be facing yet another test. is a senior editor and author of Notepad, who has been ...