DeepSeek V3.1 Terminus
DeepSeek V3.1 Terminus is worth evaluating for rag, long context, and classification when its provider route and context window match the workload.
Use it for
- Teams evaluating rag, long context, and classification
- Workloads that can use a 164k context window
- Buyers comparing 4 tracked provider routes
Do not use it for
- Vision or document-understanding workloads
- Family
- DeepSeek
- Released
- 2025-09-22
- Context
- 164k
- Parameters
- 671B total, 37B active (MoE)
- Architecture
- Decoder Only
- Specialization
- general
- Openness
- Open weights
- License
- DeepSeek LicenseCommercial use: permitted
Cheapest of 4 routes · OpenRouter
About
DeepSeek: DeepSeek V3.1 Terminus available via OpenRouter. Pricing: $0.21/1M input, $0.79/1M output.
DeepSeek V3.1 Terminus is an open-weight model in the DeepSeek family. The structured metadata tracks structured outputs. This page tracks provider routes through NVIDIA NIM, OpenRouter, Vercel AI Gateway, and 1 more, with the cheapest tracked route listed at $0.21 input and $0.79 output per 1M tokens. No headline benchmark score is tracked for DeepSeek V3.1 Terminus yet.
Top use-case fit
RAG
Included by capability and metadata signals in the decision map.
Long context
Included by capability and metadata signals in the decision map.
Classification
Included by capability and metadata signals in the decision map.
Provider price ladder
Compare all 4Compare API pricing across 4 providers for input and output tokens, batch, and cached reads when available.
| Provider | Input / 1M | Output / 1M | Cache | Route |
|---|---|---|---|---|
| OpenRouter | $0.210 | $0.790 | - | Serverless |
| Novita AI | $0.270 | $1.00 | - | Serverless |
| Vercel AI Gateway | $0.270 | $1.00 | read $0.135 | Serverless |
| NVIDIA NIM | - | - | - | ServerlessPartial |
Available via routers & gateways(1)
Capabilities
Benchmark peer barsfor RAG
No task-mapped benchmark peers are available for this model yet.
Migration checks
No linked migration route is available for this model yet.
Frequently asked questions
What is the context window of DeepSeek V3.1 Terminus?
DeepSeek V3.1 Terminus has a context window of 164k tokens.
How much does DeepSeek V3.1 Terminus cost?
DeepSeek V3.1 Terminus pricing ranges from $0.21/1M to $0.27/1M input tokens depending on the provider.
When was DeepSeek V3.1 Terminus released?
DeepSeek V3.1 Terminus was released on 2025-09-22.
Which providers offer DeepSeek V3.1 Terminus?
DeepSeek V3.1 Terminus is available from 4 providers: NVIDIA NIM, OpenRouter, Vercel AI Gateway, Novita AI.
Cheapest of 4 routes · OpenRouter