{"id":"deepseek/deepseek-r1-0528","name":"R1 0528","owned_by":"deepseek","description":"May 28th update to the [original DeepSeek R1](/deepseek/deepseek-r1) Performance on par with [OpenAI o1](/openai/o1), but open-sourced and with fully open reasoning tokens. It's 671B parameters in size, with 37B active...","context_window":163840,"max_tokens":32768,"type":"language","tags":["reasoning","tool-use"],"released":1748455170,"modalities":{"input":["text"],"output":["text"]},"supported_parameters":["frequency_penalty","include_reasoning","logit_bias","logprobs","max_tokens","min_p","presence_penalty","reasoning","repetition_penalty","response_format","seed","stop","structured_outputs","temperature","tool_choice","tools","top_k","top_logprobs","top_p"],"pricing":{"input":"0.0000005","output":"0.00000215","input_cache_read":"0.00000035"},"legal":[]}