The company unveiled two new open-weight language models, gpt-oss-120b and gpt-oss-20b, marking its first public release of freely available AI model weights since GPT-2 in 2019, long before the AI hype took over the tech world.

For the first time in five years, OpenAI has released two new free and open-source AI models that are lightweight and designed to be easily integrated into other software programs. In a blog post on Tuesday,

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.