Mixture-of-Experts (MoE) 1
OpenAI's open-source GPT models democratizing AI access for reasoning and development.
GPT OSS represents a groundbreaking shift in AI accessibility, released by OpenAI on August 5, 2025. This open-source GPT model family consists of two powerful variants, GPT-OSS-120B and GPT-OSS-20B, designed for reasoning and developer tasks. It aims to democratize access to advanced AI through powerful reasoning capabilities, developer-friendly features, and Apache 2.0 licensing.