{"id":"openai/gpt-oss-20b","name":"gpt-oss-20b","owned_by":"openai","description":"gpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license. It uses a Mixture-of-Experts (MoE) architecture with 3.6B active parameters per forward pass, optimized for...","context_window":131072,"max_tokens":117964,"type":"language","tags":["reasoning","tool-use"],"released":1754414229,"modalities":{"input":["text"],"output":["text"]},"supported_parameters":["frequency_penalty","include_reasoning","logit_bias","logprobs","max_tokens","min_p","presence_penalty","reasoning","reasoning_effort","repetition_penalty","response_format","seed","stop","structured_outputs","temperature","tool_choice","tools","top_k","top_logprobs","top_p"],"pricing":{"input":"0.00000003","output":"0.00000013","input_cache_read":"0.00000003"},"legal":[]}