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...
deepseek/deepseek-r1-0528R1 0528 is an API model from DeepSeek, released on May 28, 2025, with a context window of 163,840 tokens, pricing of $0.5 per million input tokens and $2.15 per million output tokens. It accepts text input and produces text output.
At listed prices, a request with 10,000 input tokens and 1,000 output tokens costs about $0.0072.
Specs are sourced from OpenRouter and were last checked on Sep 20, 2026. Always confirm current pricing and limits with the provider before production use.
R1 0528 supports a context window of 163,840 tokens.
R1 0528 is listed at $0.5 per million input tokens and $2.15 per million output tokens on OpenRouter.
R1 0528 was published on May 28, 2025.
R1 0528 accepts text input and produces text output.