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DeepSeek

DeepSeek V3.1
fast
Overview
CompanyDeepSeek
Version3.1
Tierfast
Released2025-08-21
Open weightsYes
Parameters684.5B
StatusActive
Pricing (USD per 1M tokens)
Input$0.25
Output$0.95
Cached input$0.13
Batch input—
Batch output—
Blended (3 in : 1 out)$0.42
Est. cost per token$0.000000425
Capacity
Context window164K
Max output147K
Inputstext
Features
CachingYes
JSON schemaYes
ReasoningYes
ToolsYes
Task fit (heuristic, 1–5)
coding3 / 5
reasoning3 / 5
math3 / 5
summarization4 / 5
extraction4 / 5
classification4 / 5
chat3 / 5
creative3 / 5
translation4 / 5
vision1 / 5
long context3 / 5
agentic3 / 5

Prices are USD per 1M tokens from vendor price lists. “—” means the vendor does not publish it.