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deepseek-reasoner

An alias for DeepSeek v4 Flash in thinking mode.

text → text · made by DeepSeek

$0.14$0.28per Mtok in / out
Requesty

Sold by 1 way

SellerLaneRate
Requesty aggregatordeepseek$0.14per Mtok in$0.28per Mtok out$0.028per Mtok cachedrouter.requesty.ai · read 2026-08-28

Measured 5 standings

PlaceBoardMetricScore
14thof 72Aider polyglot — Epoch AIPercent correct74.2
71stof 290OTIS Mock AIME 2024-2025mean_score87.817
97thof 313GPQA Diamondmean_score83.424
114thof 222Chess puzzles — Epoch AImean_score14
299thof 656Epoch capabilities index — Epoch AIECI Score146.21

About

deepseek-reasoner — a text model from DeepSeek, placed 14th of 72 on Aider polyglot — Epoch AI.

It takes text and returns text, with a context window of 1,000,000 tokens. It was published in December 2025, trained on material up to September 2025. Its sellers say it can reason step by step and call a tool. The catalogue files it under reasoning. It has been measured on 5 boards, and stands best at 14th of 72 on Aider polyglot — Epoch AI.

Every current figure

Maker
DeepSeek
Register
model
Takes
text
Returns
text
Context
1,000,000 tokens
Longest answer
384,000 tokens
Published
December 2025
Knowledge to
September 2025
Boards
5
Best place
14th of 72 — Aider polyglot — Epoch AI

Known as 1 name

deepseek/deepseek-reasoner