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.

OpenAI's release of two open source models Tuesday propels the U.S. forward in its AI race with China, industry leaders told Axios. The big picture: The arrival of China's DeepSeek model earlier this year — combined with Meta's refocusing of its open source efforts — had intensified concerns that China's open models could end up dominating the global market.