Skip to content
  12.  
    13. © 2023 – 2025 OpenRouter, Inc

    DeepSeek: R1 0528

    deepseek/deepseek-r1-0528

    Created May 28, 2025163,840 context
    $0.40/M input tokens$1.75/M output tokens

    May 28th update to the original DeepSeek R1 Performance on par with OpenAI o1, but open-sourced and with fully open reasoning tokens. It's 671B parameters in size, with 37B active in an inference pass.

    Fully open-source model.

    Sample code and API for R1 0528

    OpenRouter normalizes requests and responses across providers for you.

    OpenRouter provides an OpenAI-compatible completion API to 400+ models & providers that you can call directly, or using the OpenAI SDK. Additionally, some third-party SDKs are available.

    In the examples below, the OpenRouter-specific headers are optional. Setting them allows your app to appear on the OpenRouter leaderboards.

    Using third-party SDKs

    For information about using third-party SDKs and frameworks with OpenRouter, please see our frameworks documentation.

    See the Request docs for all possible fields, and Parameters for explanations of specific sampling parameters.