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R1

by DeepSeekReleased 20 January 2025

DeepSeek R1 is a reasoning model that works through a problem step by step before answering, and it shows you that working in full so you can read it. It takes text and replies in text, keeping about 64 pages in mind with replies up to about 16 pages, which is short next to newer models. Use it for maths, logic puzzles and debugging where seeing the working matters. DeepSeek R1 0528 is the improved version, with a longer memory and the ability to fill in an exact form.

TakesText
GivesText

Reads about 64 pages · writes up to 16 pages

Parameters you can send

Standard OpenAI fields, grouped by what they control. Anything not listed is accepted and ignored.

Shaping the reply

How long, how varied, where to stop.

max_tokenstemperaturetop_ptop_kstopseedfrequency_penaltypresence_penaltyrepetition_penalty

Reasoning

Let it think before answering — and see the thinking.

reasoninginclude_reasoning

Structured output

Get JSON you can parse instead of prose.

response_format

Tools

Let the model call your functions.

toolstool_choice

Questions about R1

  • Is R1 still on sale?

    No. DeepSeek has retired it. Other DeepSeek models are on sale.

  • What is R1 best for?

    DeepSeek R1 is a reasoning model that works through a problem step by step before answering, and it shows you that working in full so you can read it. It takes text and replies in text, keeping about 64 pages in mind with replies up to about 16 pages, which is short next to newer models. Use it for maths, logic puzzles and debugging where seeing the working matters. DeepSeek R1 0528 is the improved version, with a longer memory and the ability to fill in an exact form.

  • Does R1 work in Arabic, French or Darja?

    DeepSeek names no languages for R1. Arabic, French and Darja: not stated.

  • Can it read PDFs, images or a whole book?

    It reads text. Up to 64K tokens in one request, about 64 pages. It writes up to 12 000 words at once.

  • Is R1 open source?

    Yes, its weights are public. Open weights on Hugging Face

  • Who makes R1, and when was it released?

    DeepSeek. Released 20 January 2025. It knows the world up to 31 July 2024.

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