DeepSeek Reasoner

Current DeepSeek reasoning family with larger default/max output and tool support.

Capabilities

Modalities: text→text
Capabilities: reasoningbatchSupportpromptCachingfunctionCallingstructuredOutputs
Strengths: Large output budget, Cheap reasoning
Tradeoffs: Text-only

Official Links

Intro

Docs

Pricing

Release note

Benchmark	Version	Score	Date	Source	Notes

Release	Alias	Lifecycle	Release Date	Deprecation	Shutdown	Summary
DeepSeek Reasoner	deepseek-reasoner	Active	Dec 1, 2025	—	—	Current published model family snapshot.

Host	Type	Context	Pricing Note	Differences
DeepSeek API	first-party	128.0K	Reference pricing and V3.2 mapping.	Thinking mode; Tool calls

Migration Guidance

Reasoning-tier sibling to DeepSeek chat for harder problems.

Replacement models: deepseek-v3

Change Events

Date	Type	Title	Description	Source
Jan 20, 2025	family_added	DeepSeek Reasoner published	Initial public model family launch.	DeepSeek Reasoner release notes