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DeepSeek: DeepSeek V3.1

deepseek/deepseek-chat-v3.1

DeepSeek-V3.1 is a large hybrid reasoning model (671B parameters, 37B active) that supports both thinking and non-thinking modes via prompt templates. It extends the DeepSeek-V3 base with a two-phase long-context...

Source-linkedClosed weights
Report data
Context window163.84K
Maximum output32.768K
Provider offers0
Knowledge cutoffUndisclosed
Capabilities

What this model supports

ReasoningNo
Tool callingNo
Structured outputNo
AttachmentsNo
Temperature controlNo
Open weightsNo
Creator
DeepSeek
Family
Not documented
Modalities
Text
License
Not documented
Release date
Not documented
Model ID
deepseek/deepseek-chat-v3.1
Market availability

Provider pricing

Report price →
No known providers available.
Evidence

Published benchmark results

Design Arena: 3d vs top 8 models
Z.ai: GLM 5.2
1371.0
Claude Fable 5
1361.0
xAI: Grok 4.5
1352.0
Anthropic: Claude Opus 4.6
1348.0
Kimi K2.6
1348.0
Z.ai: GLM 5.1
1336.0
DeepSeek V4 Pro
1326.0
DeepSeek: DeepSeek V3.1
1150.0
Design Arena: codecategories vs top 8 models
Z.ai: GLM 5.2
1352.0
Claude Fable 5
1344.0
Anthropic: Claude Opus 4.6
1336.0
Anthropic: Claude Opus 4.7
1330.0
xAI: Grok 4.5
1328.0
Z.ai: GLM 5.1
1321.0
Kimi K2.6
1320.0
DeepSeek: DeepSeek V3.1
1154.0
Design Arena: dataviz vs top 8 models
Claude Fable 5
1372.0
Z.ai: GLM 5.1
1366.0
xAI: Grok 4.5
1330.0
Anthropic: Claude Opus 4.6
1321.0
Anthropic: Claude Opus 4.7
1320.0
Z.ai: GLM 5.2
1318.0
Anthropic: Claude Sonnet 4.6
1317.0
DeepSeek: DeepSeek V3.1
1139.0
Design Arena: gamedev vs top 8 models
Claude Fable 5
1387.0
Z.ai: GLM 5.2
1354.0
Claude Sonnet 5
1345.0
GPT-5.5
1344.0
Anthropic: Claude Opus 4.6
1339.0
MiMo-V2.5-Pro
1334.0
Anthropic: Claude Opus 4.7
1334.0
DeepSeek: DeepSeek V3.1
1146.0
Design Arena: svg vs top 8 models
Claude Fable 5
1364.0
Gemini 3.1 Pro Preview
1340.0
Gemini 3.5 Flash
1297.0
Anthropic: Claude Opus 4.6
1279.0
GPT-5.5
1277.0
Anthropic: Claude Opus 4.7
1274.0
Z.ai: GLM 5.1
1273.0
DeepSeek: DeepSeek V3.1
1017.0
Design Arena: uicomponent vs top 8 models
Claude Fable 5
1406.0
Anthropic: Claude Opus 4.7
1358.0
Anthropic: Claude Opus 4.6
1344.0
Z.ai: GLM 5.2
1336.0
Qwen: Qwen3.7 Max
1331.0
Z.ai: GLM 5.1
1330.0
Anthropic: Claude Sonnet 4.6
1321.0
DeepSeek: DeepSeek V3.1
1132.0
Design Arena: website vs top 8 models
Z.ai: GLM 5.2
1346.0
Claude Fable 5
1336.0
Anthropic: Claude Opus 4.6
1331.0
Anthropic: Claude Opus 4.7
1329.0
xAI: Grok 4.5
1323.0
Anthropic: Claude Sonnet 4.6
1320.0
Claude Sonnet 5
1314.0
DeepSeek: DeepSeek V3.1
1158.0