R1 0528

Facts

Released

2025-05-28 the day the repository was first published on Hugging Face Hugging Face, read 2026-09-24

Licence

mit the licence the model card declares Hugging Face, read 2026-09-24

Open weights

Yes the weights are published in this Hugging Face repository Hugging Face, read 2026-09-24

Parameters

684.5 billion counted from the safetensors weight files Hugging Face, read 2026-09-24

Active parameters

51.1 billion estimate estimated from the expert counts and sizes in the configuration model configuration, read 2026-09-24

Knowledge cutoff

2025-03-31 the knowledge cutoff OpenRouter lists OpenRouter, read 2026-09-24

Context window

• 163,840 tokens the maximum position embeddings in the model configuration model configuration, read 2026-09-24
• 163,840 tokens the context length OpenRouter lists OpenRouter, read 2026-09-24

Longest output

• 32,768 tokens the largest output OpenRouter's first provider allows OpenRouter, read 2026-09-24

Tool calling

• No the chat template in the tokenizer configuration has no place for tool definitions Hugging Face, read 2026-09-24
• Yes OpenRouter lists tools among the supported parameters OpenRouter, read 2026-09-24

Structured output

• Yes OpenRouter lists structured outputs among the supported parameters OpenRouter, read 2026-09-24

Reasoning controls

• Yes OpenRouter lists reasoning controls OpenRouter, read 2026-09-24

Inputs and outputs

text in, text out Hugging Face, read 2026-09-24

Good for

• Reasoning: OpenRouter lists reasoning controls for it OpenRouter, read 2026-09-24

Prices

Run it on your own hardware

Weights are the sizes of the files a source lists, or an estimate from the parameter count where none does. Memory is an estimate: weights plus KV cache plus 512 MiB and 5 percent of the weights for runtime buffers. Check it against your hardware.

Start it with a local runtime

• Ollama

  ollama run hf.co/bartowski/deepseek-ai_DeepSeek-R1-0528-GGUF:Q4_0

• LM Studio

  lms get bartowski/deepseek-ai_DeepSeek-R1-0528-GGUF
  lms server start

• llama.cpp server

  llama-server -hf bartowski/deepseek-ai_DeepSeek-R1-0528-GGUF:Q4_0 --jinja

• vLLM

  vllm serve deepseek-ai/DeepSeek-R1-0528

• SGLang

  sglang serve --model-path deepseek-ai/DeepSeek-R1-0528 --port 30000

Use it from your harness

Set up for DeepInfra with the model deepseek-ai/DeepSeek-R1-0528. Each endpoint page has the same setup for its own address.

{
  "$schema": "https://opencode.ai/config.json",
  "provider": {
    "deepinfra": {
      "npm": "@ai-sdk/openai-compatible",
      "name": "DeepInfra",
      "options": {
        "baseURL": "https://api.deepinfra.com/v1/openai",
        "apiKey": "{env:DEEPINFRA_TOKEN}"
      },
      "models": {
        "deepseek-ai/DeepSeek-R1-0528": {
          "name": "R1 0528",
          "limit": {
            "context": 163840,
            "output": 32768
          }
        }
      }
    }
  }
}

{
  "providers": {
    "deepinfra": {
      "baseUrl": "https://api.deepinfra.com/v1/openai",
      "api": "openai-completions",
      "apiKey": "$DEEPINFRA_TOKEN",
      "models": [
        {
          "id": "deepseek-ai/DeepSeek-R1-0528"
        }
      ]
    }
  }
}

export ANTHROPIC_BASE_URL="https://api.deepinfra.com/anthropic"
export ANTHROPIC_AUTH_TOKEN="$DEEPINFRA_TOKEN"
export ANTHROPIC_MODEL="deepseek-ai/DeepSeek-R1-0528"
claude

Other ways to reach it

• Hugging Face, model deepseek-ai/DeepSeek-R1-0528
• IO.NET, model deepseek-ai/DeepSeek-R1-0528
• Meganova, model deepseek-ai/DeepSeek-R1-0528
• NanoGPT, model deepseek-ai/DeepSeek-R1-0528
• submodel, model deepseek-ai/DeepSeek-R1-0528
• OpenRouter, model deepseek/deepseek-r1-0528
• Ollama, model hf.co/bartowski/deepseek-ai_DeepSeek-R1-0528-GGUF:Q4_0

Published results

These are results other people published. Baltor did not run them and does not rank models by them.

• Results the maker published on the model card published by deepseek-ai Hugging Face, read 2026-09-24