DeepSeek V3.1 TerminusOpen Weight
Released
DeepSeek V3.1 Terminus is an AI model released by DeepSeek on Monday, Sep 22 2025, 32 days after DeepSeek V3.1. It is an open-weight model — the trained weights are available to download and run.
Available from
| AtlasCloud | $0.30 | $0.95 | 128K | fp8 |
|---|---|---|---|---|
| Novita | $0.27 | $1.00 | 128K | fp8 |
| SiliconFlow | $0.27 | $1.00 | 160K | fp8 |
| StreamLake | $0.3426 | $1.0284 | 128K | — |
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Frequently asked questions
DeepSeek V3.1 Terminus was released by DeepSeek on Monday, Sep 22 2025.
DeepSeek V3.1 Terminus was built by DeepSeek. Chinese AI lab known for efficient, open-weight models. Gained attention for strong performance at lower cost.
Partly. DeepSeek V3.1 Terminus is an open-weight model: the trained weights are free to download and run locally or on your own infrastructure, but the training data and code are not fully released and the license may restrict some commercial uses. It is not open source in the strict sense.
DeepSeek's previous tracked release was DeepSeek V3.1 on Aug 21 2025, 32 days earlier. It was followed by DeepSeek V3.2 Exp on Sep 29 2025.