Is R1 available on FastMetal?

Not at the moment. DeepSeek V4.1 Flash, from the same lab, is available on the FastMetal API today.

What is the context window of R1?

64,000 tokens, shared between the prompt and the response.

#126 on the public arena's Japanese board (ELO 1,338). Ranks move as the leaderboard is updated.

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deepseek/deepseek-r1

Not Available

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!

1/20/2025

64,000 tokens

#110 Text (Korean)

Specifications

Modalities

Input

text

Output

text

Supported Parameters

frequency_penalty

include_reasoning

max_tokens

presence_penalty

reasoning

repetition_penalty

seed

stop

temperature

tool_choice

tools

top_k

top_p

Max Output Tokens

16,000

Reasoning Configuration

Default: Thinking on
Turning thinking off: Not possible (always thinks)

How to control thinking, and what it costs

Frequently asked questions

Is R1 available on FastMetal?: Not at the moment. DeepSeek V4.1 Flash, from the same lab, is available on the FastMetal API today.
What is the context window of R1?: 64,000 tokens, shared between the prompt and the response.
How does R1 rank?: #126 on the public arena's Japanese board (ELO 1,338). Ranks move as the leaderboard is updated.