OpenAI Launches Two Open-Source AI Models Matching Performance of o3 and o3-Mini OpenAI has released two open-source artificial intelligence (AI) models—marking its first such contribution to the open-source community since the release of GPT-2 in 2019. The models, named gpt-oss-120b and gpt-oss-20b, are now August 7, 2025 News/Technology News