Skip to content
  • Status
  • Announcements
  • Docs
  • Support
  • About
  • Partners
  • Enterprise
  • Careers
  • Pricing
  • Privacy
  • Terms
  •  
    • © 2025 OpenRouter, Inc

    DeepSeek: R1 0528 (free)Free variant

    deepseek/deepseek-r1-0528:free

    Created May 28, 2025163,840 context
    $0/M input tokens$0/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.

    Recent activity on R1 0528 (free)

    Total usage per day on OpenRouter

    Prompt
    206M
    Reasoning
    42.1M
    Completion
    15.4M

    Prompt tokens measure input size. Reasoning tokens show internal thinking before a response. Completion tokens reflect total output length.