DeepSeek V3.1

Aug 2025
DeepSeek V3.1
Compare in
on
—per task?
$0.25 / $0.95per 1M in / out?
128 tok/sfirst token in 1.3 s?
128Kcontext

Alternatives?

Run it yourself

estimate
Fits on✗ 8 GB (phone, laptop)✗ 16 GB✗ 24 GB GPU✗ 48 GB GPU✗ 80 GB GPU
LicenceMITfree for commercial use

History

5 versions
6062646668Apr 25Jul 25Oct 25Release dateEQ-Bench LongformV3 · MarV3.1V3.2
6062646668Apr 25Jul 25Oct 25Release dateEQ-Bench LongformV3 · MarV3.1V3.2

Benchmarks

in Writing & Language

FAQ

How much does DeepSeek V3.1 cost?›

$0.25 per 1M input tokens and $0.95 per 1M output tokens (cheapest host: DeepInfra).

Is DeepSeek V3.1 free to use?›

There is no free API; the cheapest paid price is $0.25 per 1M input tokens. The weights are open, so you can run it yourself.

How good is DeepSeek V3.1, and what is it best at?›

#229 of 334 in Chat & Knowledge, #76 of 239 in Coding, #134 of 242 in Agents & Tool Use, #68 of 195 in Writing & Language.

Is DeepSeek V3.1 better than o3?›

On EQ-Bench Longform Creative Writing 1.11, DeepSeek V3.1 scores 62.3 vs 62.7 — about the same.

How can I use DeepSeek V3.1?›

Through the API of AWS Bedrock, CoreWeave, DeepInfra, Featherless, SambaNova and 1 more.

What is the context window of DeepSeek V3.1?›

128K tokens, with up to 33K output tokens.

When was DeepSeek V3.1 released? Is there a newer version?›

Released 2025-08-21. It has been superseded by DeepSeek V3.1 Terminus.

Is DeepSeek V3.1 open source?›

Yes, the weights are open (MIT licence).

Can I run DeepSeek V3.1 locally?›

The weights are open and can be self-hosted; hardware needs are not confirmed yet.

Can DeepSeek V3.1 read images?›

No, it accepts text only.

What is DeepSeek V3.1?›

DeepSeek V3.1 is an open-weights language model from DeepSeek, released Aug 2025, the successor to DeepSeek V3.

What are the best alternatives to DeepSeek V3.1?›

Qwen3 235B A22B Instruct 2507 (cheaper), Claude Opus 5 (better), GLM 5.3 (open weights).