OpenAI releases two open-source models GPT OSS 120B and 20B in surprise move before GPT-5 launch

For the first time since releasing GPT-2 over five years ago, OpenAI has introduced two open-weight AI models to the public. Named GPT OSS-120b and GPT OSS-20b, these models are now downloadable from Hugging Face. Distributed under the flexible Apache 2.0 license, they are fully open for use by both developers and businesses.