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

It’s the first such models it’s launched in over five years, as pressure in the US grows to respond to China’s dominance in open models.

Meta, Microsoft-backed Mistral and the Chinese startup DeepSeek have also released open-weight models in recent years.

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

OpenAI’s new open models can run on your hardware instead of in the cloud.

GPT-OSS is OpenAI’s first open-weight model in six years.

Enterprises can use a powerful, near topline OpenAI LLM on their hardware totally privately and securely, without sending data to the cloud.

The verdict, for now, is split. OpenAI’s gpt-oss models are a landmark in terms of licensing and accessibility.

OpenAI released GPT-5 on Thursday to both free users of ChatGPT and paying subscribers.

New model claims fewer confabulations, better coding, and “safe completions” approach.