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DeepSeek Reasoner

deepseek/deepseek-reasoner

DeepSeek reasoning model for multi-step analysis, math, coding, and tools

Source-linkeddeepseek-thinkingOpen weightsReleased 2025-12-01
Report data
Context window1M
Maximum output384K
Provider offers3
Knowledge cutoff2025-09
Capabilities

What this model supports

ReasoningYes
Tool callingYes
Structured outputNo
AttachmentsYes
Temperature controlYes
Open weightsYes
Creator
DeepSeek
Family
deepseek-thinking
Modalities
Text
License
Not documented
Release date
2025-12-01
Model ID
deepseek/deepseek-reasoner
Market availability

Provider pricing

Report price →
Providers offering DeepSeek Reasoner
ProviderProvider model IDContextInput / 1MOutput / 1MCached / 1MFeaturesAll pricing
DeepSeekdeepseek-reasoner1M$0.140$0.280$0.003R T ·
View
{
  "cache_read": 0.0028,
  "input": 0.14,
  "output": 0.28
}
OrcaRouterdeepseek/deepseek-reasoner1M$0.435$0.870$0.028R T ·
View
{
  "cache_read": 0.028,
  "input": 0.435,
  "output": 0.87
}
Heliconedeepseek-reasoner128K$0.560$1.680$0.070· · ·
View
{
  "cache_read": 0.07,
  "input": 0.56,
  "output": 1.68
}
Evidence

Published benchmark results

Aider Polyglot vs top 7 models
GPT-5
88.0
o3-pro
84.9
Gemini 2.5 Pro
83.1
o3
81.3
DeepSeek Reasoner
74.2
Claude Opus 4
72.0
o4-mini
72.0