Deepseek V3.1 Terminus
DeepSeek develops the DeepSeek V 3.1 Terminus, a chat model exceling at tasks such as code generation, function calling, and reasoning, with a notable context window of 163,840 tokens. Its Math Index score of 89.7 places it among the top 25% of models, demonstrating a particular strength in mathematical reasoning.
Input
Output
Context
164K
Max Output
33K
Parameters
684.5B
Technical Specifications
Model TypeChat
Context Window163,840 tokens
Max Output Tokens32,768 tokens
Parameters684.5B
Release DateSep 22, 2025
Training CutoffMar 1, 2025
Licensemit
Open SourceYes
Input Modalities
Text
Output Modalities
Text
Capabilities
Benchmarks
Artificial Analysis
15.2%
HLE
79.2%
GPQA
40.6%
SciCode
85.1%
MMLU Pro
89.7
Math
33.7
Coding
79.8%
LiveCodeBench
26.3
Intelligence
Resources & Links
Related Tools
Data sourced from official provider APIs and documentation
Last updated: Jun 24, 2026
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