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.
At a glance
- Input / 1M
- $0.25
- Output / 1M
- $0.95
- Context
- 164K
- Max output
- 33K
- Intelligence
- 13.7
- Released
- Aug 2025
Pricing
DeepSeek V3.1 API pricing
Per-token rates, plus what common tasks actually cost.
| Input tokensPer 1M tokens | $0.25 |
|---|---|
| Output tokensPer 1M tokens | $0.95 |
| Cached input (read)Per 1M tokens | $0.13 |
| Cache writePer 1M tokens | Not available |
Chat message
2K in, 500 out
$0.98
per 1,000 requests
Coding task
30K in, 4K out
$11.30
per 1,000 requests
Long document summary
150K in, 2K out
$39.40
per 1,000 requests
Benchmarks
DeepSeek V3.1 benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
13.7
Coding index
Not available
Agentic index
Not available
Specs
Context window and capabilities
What it can read, what it can write, and which API features it supports.
- Context window
- 164K tokens
- Max output
- 33K tokens
- Input types
- Text
- Output types
- Text
- Reasoning effort
- Not available
- Release date
- August 21, 2025
- Knowledge cutoff
- March 31, 2025
- Tool calling
- Structured outputs
- JSON mode
- Reasoning
- Temperature
- Stop sequences
- Deterministic seed
- Verbosity control
Compare
DeepSeek V3.1 vs other models
See how DeepSeek V3.1 stacks up head to head on price, benchmarks, and features.
VS
DeepSeek V3.1 vs Gemini 3.1 Flash Lite
DeepSeek vs Google
See comparisonVSDeepSeek V3.1 vs Gemma 4 31B
DeepSeek vs Google
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DeepSeek V3.1 vs GPT-5 Nano
DeepSeek vs OpenAI
See comparisonVS
DeepSeek V3.1 vs Qwen3 235B A22B Instruct 2507
DeepSeek vs Qwen
See comparisonVSDeepSeek V3.1 vs DeepSeek V3.2 Exp
DeepSeek vs DeepSeek
See comparisonVSDeepSeek V3.1 vs DeepSeek V3 0324
DeepSeek vs DeepSeek
See comparisonAlternatives
DeepSeek V3.1 alternatives
Similar models worth considering, and where each one has the edge.
DeepSeek
DeepSeek V3.2 Exp
Gemini 3.1 Flash Lite
DeepSeek
DeepSeek V3.1 Terminus
Want to learn about other models? Browse all models
FAQ
Frequently asked questions
How much does DeepSeek V3.1 cost?
DeepSeek V3.1 costs $0.25 per 1M input tokens and $0.95 per 1M output tokens through the API. A typical chat message costs about $0.98 per 1,000 messages.
What is the context window of DeepSeek V3.1?
DeepSeek V3.1 accepts up to 164K tokens of input and can write up to 33K tokens in a single response.
What is the best alternative to DeepSeek V3.1?
DeepSeek V3.2 Exp from DeepSeek is a strong alternative. It offers: 2.3x cheaper output, higher intelligence score, newer release.
Can I use DeepSeek V3.1 alongside other models?
Yes. Shortcut Chat sends one prompt to DeepSeek V3.1 and any other models you pick at the same time, so you can compare answers side by side.
Try DeepSeek V3.1 next to every other model.
Use DeepSeek V3.1 alongside all the other models. Use one at a time, or multiple together. Get the best answer from every AI.