Models/DeepSeek/DeepSeek V3.1

DeepSeek V3.1

Name: DeepSeek V3.1 API access
Brand: DeepSeek

DeepSeek · Open weights · Released Aug 21, 2025 · deepseek/deepseek-chat-v3.1

Compare Estimate cost

164K contextToolsReasoningStructured outputPrompt cachingOpen weights

Available from 8 providersUSD / MTOK · VERIFIED 12 HOURS AGO

EST. MONTHLY COSTclick a row for detail · click headers to sort

PROVIDER	INPUT	OUTPUT	CACHE	CONTEXT	QUANT	TTFT	TPS	SMOKE	UPTIME
DeepInfra	$0.25	$0.95	$0.13	164K	fp4	1.5s	9 tok/s	5/5	99.9%
SiliconFlow	$0.27	$1.00	—	164K	fp8	2s	23 tok/s	5/5	74.3%
Novita	$0.27	$1.00	$0.135	131K	fp8	2.5s	33 tok/s	5/5	100.0%
ATAtlasCloud	$0.30	$0.95	$0.13	131K	fp8	2.4s	76 tok/s	4/5	99.8%
CWCoreWeave	$0.55	$1.65	$0.55	161K	fp8	1.1s	57 tok/s	5/5	100.0%
MAMara	$0.60	$1.70	—	131K	—	2.8s	163 tok/s	4/5	99.3%
Google	$0.60	$1.70	—	164K	—	0.71s	238 tok/s	—	96.7%
SambaNova	$0.65	$1.50	—	131K	fp8	2.7s	165 tok/s	—	99.1%

TTFT/TPS: median (P50) over trailing 72h · chat10k profile (~10K in / 200 out) · measured via OpenRouter routing · SMOKE: of 5 programmatic capability probes passed (JSON schema, instruction following, tool call, long-context, benign compliance; retry-once) · screened via OpenRouter routing · v0.1 · methodology v1.1 · measured 42 hours ago

Pricing variants · USD / MTok in / out

STANDARD

$0.25 / $0.95

per MTok in / out

CACHE READ $0.13

About

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...

Specifications

Context window163,840

Max output161,000

Modalities intext

Modalities outtext

LicenseOpen weights

ReleasedAug 21, 2025

Knowledge cutoff2025-03-31

TokenizerDeepSeek

WeightsHugging Face ↗

Open weights

Hugging Facedeepseek-ai/DeepSeek-V3.1 ↗

Downloads226.1K

Likes826

Licensemit

safetensors

DeepSeek V4 Flash Vision Exp$0.22 / $0.66 DeepSeek V4 Pro 0813$0.627 / $1.88 DeepSeek V4 Flash 0731$0.04 / $0.08 DeepSeek V4 Pro 0423$0.397 / $0.794

Embed badge

[![DeepSeek V3.1](https://modelindex.ai/badge/deepseek/deepseek-chat-v3.1)](https://modelindex.ai/models/deepseek/deepseek-chat-v3.1)

Sources

OpenRouter API12 hours ago

AGGREGATOR

Hugging Face12 hours ago

COMMUNITY

ModelIndex benchmarks42 hours ago

MEASURED

Verified 12 hours ago · list prices, not negotiated rates.