R1
DeepSeek R1 is here: 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 & [technical report](https://api-docs.deepseek.com/news/news250120). MIT licensed: Distill & commercialize freely!
Context window
This model accepts 128K tokens in one request (~96K words of text).
What fits in one request
- FitsShort documentAbout 1,500 words of text
- FitsLong documentAbout 37K words of text
- Won't fitSmall codebaseAbout 150K words of text
- Won't fitFull novelAbout 375K words of text
Specifications
Context size, pricing, and release info in one place.
- Context window
- 128,000 tokens (128K)
- Max output tokens
- 8,192 tokens (8K)
- Speed tier
- deep
- Provider
- Deepseek
- Model family
- DeepSeek R1
- Release date
- Jan 2025
- Input cost
- $1.35/M / 1M tokens
- Output cost
- $5.40/M / 1M tokens
Capabilities
See which features this model supports, such as vision, tools, and streaming.
- Tool use
- Can call external tools and APIs
- Supported
- Function calling
- Structured function call interface
- Supported
- Extended thinking
- Shows its chain-of-thought reasoning
- Supported
- Streaming
- Returns tokens as they are generated
- Supported
- Vision
- Accepts image inputs alongside text
- Not supported
- Web search
- Can browse the web during a request
- Not supported
- Batch API
- Process many requests asynchronously
- Not supported
- Prompt caching
- Reuse repeated prompt prefixes cheaply
- Not supported
Best for
Jump to a guide or ranking that matches each workload.
Compare R1
Open a side-by-side comparison with one click.
- R1 vs Amazon Titan Text Express
R1 has 204% larger context window
- R1 vs Amazon Titan Text Lite
R1 has 204% larger context window
- R1 vs Amazon Titan Text Premier
R1 has 204% larger context window
- R1 vs Claude Instant
R1 has 28% larger context window
- R1 vs Anthropic Claude
R1 has 28% larger context window
- R1 vs Codellama 34b Instruct
R1 has 3025% larger context window
Frequently asked questions
Short answers about context size and how this model behaves.
More from Deepseek
Other models by Deepseek in our catalog.
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