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DeepSeek V3.1 Terminus


DeepSeek V3.1 Terminus is DeepSeek's language model with a 164K context window and up to 66K output tokens, available from 6 providers, starting at $0.270 / 1M input and $0.950 / 1M output. An update to DeepSeek V3.1 that addresses language consistency and agent capability issues while preserving the model's core performance.
Specifications
Canonical IDdeepseek-v3-1-terminus
TypeLanguage
StatusActive
CreatorDeepSeekDeepSeek
Providers
Context Window164K tokens
Max Output66K tokens
Input ModalitiesText
Output ModalitiesText
Reasoning Effortsdefault
Parameters685B
HuggingFace Likes363
HuggingFace Downloads (30d)3,879
HuggingFace Downloads (all-time)180,017
Release Date · 8 months ago
Knowledge Cutoff
Benchmarks
Intelligence Index
28.5
#136
Coding Index
31.9
#89
Math Index
53.7
#126
MMLU-Pro
0.8
#48
GPQA
0.8
#136
HLE
0.1
#158
LiveCodeBench
0.5
#129
IFBench
0.4
#206
Time to First Token
SciCode
0.3
#199
AIME 2025
0.5
#126
LCR
0.4
#153
TerminalBench Hard
0.3
#70
TAU2
0.4
#185
Output TPS
0.0
#335

Capabilities

Input1/5
Text
Image·
Audio·
Video·
PDF·
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities5/13
Reasoning
Adaptive Reasoning·
Function Calling
Parallel Function Calling
Structured Outputs
Native JSON Schema
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Pricing by Provider

ProviderStandard
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
DeepInfra logo
DeepInfra
deepinfra/deepseek-ai/DeepSeek-V3.1-Terminus
$0.270$1.00$0.216
Hugging Face logo
Hugging Face
novita:deepseek/deepseek-v3.1-terminus
$0.270$1.00N/A
Novita logo
Novita
novita/deepseek/deepseek-v3.1-terminus
$0.270$1.00$0.135
OpenRouter logo
OpenRouter
deepseek/deepseek-v3.1-terminus
$0.270$0.950$0.130
Vercel AI Gateway logo
Vercel AI Gateway
deepseek/deepseek-v3.1-terminus
$0.270$1.00$0.135
Fireworks AI logo
Fireworks AI
fireworks_ai/accounts/fireworks/models/deepseek-v3p1-terminus
$0.560$1.68N/A

Cost Calculator

Preset:
Compares every provider & tier in USD

Other models

ModelTierReleasedContextInput / 1MOutput / 1M
DeepSeek V3.1164K$0.135$0.500
DeepSeek V3.1164K$0.150$0.750
DeepSeek V3 0324164K$0.200$0.770
DeepSeek V3400K$0.200$0.200
DeepSeek V3 324164K$0.200$0.400
DeepSeek Prover V2164K$1.20$1.20
Kimi K2 Instruct262K$0.500$2.00
DeepSeek R1 528164K$0.200$0.250
DeepSeek R1164K$0.280$0.400
DeepSeek R1 BasicBasic128K$0.550$2.19

Model IDs