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DeepSeek: R1 0528

Server-rendered model summary page for indexing/share previews. Use the interactive explorer for full filtering and comparison.

Match confidence: UnmatchedSource type: model_only
Context window
0
Arena overall rank
—
Input price
$0.000 / 1M
Output price
$0.000 / 1M

Identifiers & provenance

Primary ID
deepseek/deepseek-r1-0528
OpenRouter ID
deepseek/deepseek-r1-0528
Canonical slug
deepseek/deepseek-r1-0528

Source semantics

  • Arena rank is a human-preference leaderboard signal, not a universal truth metric.
  • OpenRouter usage/popularity reflects adoption/traffic, not benchmark quality.
  • Pricing fields may differ by provider and can include extra modes beyond prompt/completion.

Read more on Methodology & data sources.

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 in an inference pass. Fully open-source model.

Raw fields snapshot

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  "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 in an inference pass.\n\nFully open-source model.",
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    "model": {
      "id": "deepseek/deepseek-r1-0528",
      "slug": "deepseek/deepseek-r1-0528",
      "display_name": "DeepSeek: R1 0528",
      "provider": "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 in an inference pass.\n\nFully open-source model.",
      "context_length": null,
      "modalities": [
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      "tags": [],
      "source_type": "model_only",
      "updated_at": "2026-03-01T02:42:40.021709+00:00",
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DeepSeek: R1 0528 · NNZen