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DeepSeek/DeepSeek-V3.1-Terminus

Reasoning Tool Calling Open Weights

DeepSeek-V3.1 Terminus is an update to [DeepSeek V3.1](/deepseek/deepseek-chat-v3.1) that maintains the model's original capabilities while addressing issues reported by users, including language consistency and agent capabilities, further optimizing the model's...

Providers 2
Released Sep 22, 2025
Input Modalities text
Output Modalities text
Tarsk Use coding

Benchmarks

28.5
Intelligence Index
31.9
Coding Index
53.7
Math Index

Available Providers (2)

Provider Model ID Input Cost Output Cost Context Max Output Docs
Kilo Gateway deepseek/deepseek-v3.1-terminus $0.21/MTok $0.79/MTok 163.8K 32.8K
Qiniu deepseek/deepseek-v3.1-terminus —/MTok —/MTok 128K 32K

Capabilities

Reasoning
Tool Calling
Attachments
Open Weights
Structured Output