DeepSeek: DeepSeek V3.1
Analysis Summary
DeepSeek V3.1 supports tool use and function calling with a 163K context window, backed by moderate agentic task performance. Its general reasoning index sits well below current frontier models.
This makes it a workable choice for cost-sensitive automation, chatbots and moderate-complexity agent tasks, though it is not the right pick for the most demanding reasoning or coding work.
Pricing around $0.25/$0.95 per million tokens is competitive, making it a reasonable fallback model for high-volume tasks where budget outweighs peak accuracy.
Assessed July 19, 2026
Editorial notes
DeepSeek V3.1 offers reasonable agentic performance and tool use with a large context window at a low price, though reasoning scores trail top-tier models.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
DFO Verdict
DeepSeek V3.1 offers reasonable agentic performance and tool use with a large context window at a low price, though reasoning scores trail top-tier models.
How DeepSeek: DeepSeek V3.1 compares
DeepSeek: DeepSeek V3.1 ranks #143 of 393 AI models we track for overall intelligence, #129 of 300 for agentic tasks. Its 164K-token context window is larger than 59% of the models we list. At $0.25 per million input tokens it is cheaper than 50% of comparable models.
Dark bar = input Ā· light bar = output, scaled to the priciest peer.
1M tokens ā 8 full-length novels or ~2,500 pages of business documents in a single request.
Strongest on value. The pulled-in content corner is the trade-off, and if the shape matters more than the price, this is your model.
Compare shapes side-by-side āPricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $0.25 | $0.000250 |
| Output | $0.95 | $0.000950 |
What would DeepSeek: DeepSeek V3.1 cost your business?
Pick the job that looks most like yours, then fine-tune with the sliders. Estimates update live.
A website chatbot handling around 100 customer conversations a day, a few short messages each.
Full calculator with 612 models ā Price Calculator
These numbers get smaller with the right architecture.
We route routine calls to cheap models and save DeepSeek: DeepSeek V3.1 for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamAbout DeepSeek: DeepSeek 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..
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Frequently asked questions about DeepSeek: DeepSeek V3.1
How much does DeepSeek: DeepSeek V3.1 cost?
DeepSeek: DeepSeek V3.1 costs $0.25 per million input tokens and $0.95 per million output tokens.
What is the context window of DeepSeek: DeepSeek V3.1?
DeepSeek: DeepSeek V3.1 has a context window of 163,840 tokens (164K).
What can DeepSeek: DeepSeek V3.1 do?
DeepSeek: DeepSeek V3.1 supports tool use and function calling.
Who created DeepSeek: DeepSeek V3.1?
DeepSeek: DeepSeek V3.1 is developed by DeepSeek and was released on August 21, 2025.
