deepseek-reasoner

Model at DeepSeek

109th of 325 on GPQA Diamond

deepseek-reasoner does not have a researched profile yet. Everything here comes from its recorded changes and public listings, each linked to its source.

The basics

As of Nov 1

Status: Retired Jul 24, 2026

Updates

Apr 24

Retiring

deepseek-chat and deepseek-reasoner to be retired July 24

DeepSeek announced that the deepseek-chat and deepseek-reasoner model names would be fully retired after July 24, 2026, 15:59 UTC. Until then they route to deepseek-v4-flash.

Action needed:: Switch to deepseek-v4-flash or deepseek-v4-pro before July 24, 2026.

Full changelog, by month

Benchmarks

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Independent

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