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DeepSeek V3.1: price, performance and context

Open DeepSeek V3.1 by DeepSeek costs $0.25 per 1M input and $0.95 per 1M output tokens, handles up to 163.8K tokens in one request (≈ 490 pages of text) and scores 13.7 points on the AgentKernel performance index, rank 123 of 212.

Privacy: zero data retention with 5 providers, not in the EU. Availability over the last 24 h: 100%.

Updated Oct 09, 2026, 16:49 UTC · deepseek/deepseek-chat-v3.1

Open in the interactive comparison

Key facts

Licence
Open weights: free to download and self-host
Input / 1M tokens
$0.25
Output / 1M tokens
$0.95
Context window
163.8K tokens
Max. output
32.8K tokens
Performance index
13.7 points · rank 123 of 212
Coding index
n/a
Agentic index
n/a
Cost at your usage
$0.488 / month
Knowledge cutoff
Mar 2025
In the catalog since
Aug 21, 2025
Capabilities
Reasoning, Tool Calling

What do you get for $10.00?

Rules of thumb from the cost calculator, base rates without caching or taxes.

TaskCost per taskFor $10.00
Chat repliesA question with a short history, a detailed answer$0.00118,000
Email draftsBullet points in, a finished email out$0.0023,000
Document summariesRead 10 pages, write a one-page summary$0.0017,700
Code reviewsReview and comment on 500 lines of code$0.0024,300
Book analysesAnalyse a 300-page book in one go$0.027370

Cheaper with similar performance

ModelLicencePerformanceYour cost / month
Ling 3.1 FlashinclusionAIProprietary41.1$0.00
Ling 3.0 Flash VLinclusionAIOpen24.6$0.036
Ling 3.0 FlashinclusionAIOpen20.1$0.037

Stronger models

ModelLicencePerformanceYour cost / month
Mercury 2InceptionProprietary13.8$0.438
Mistral Medium 3.5MistralProprietary14.2$3.375
Gemma 4 31BGoogleOpen14.7$0.175