Atlas/Modelsgpt-oss-120b5 August 2025OpenAI's first open-weights model since GPT-2, August 2025. Apache 2.0.ConnectionsBuilt on 2Mixture of experts1991Reasoning models2024Developed by 1OpenAI2015Where it runsProviderModel idContextInputOutputOpenRouteropenai/gpt-oss-120b131K$0.15/M$0.60/MSources: AI4U editorial, Epoch AI, Hugging Face, OpenRouter.
