by DeepSeek

DeepSeek: DeepSeek V3.1 Terminus.

text open weights 164K ctx
Cheapest input
$0.27/M
on DeepSeek Platform
Cheapest output
$0.95/M
on DeepSeek Platform
Fastest
18 tok/s
on OpenRouter
Hosted equiv.
~$0.34/hr
@ 100 tok/s on DeepSeek Platform

DeepSeek-V3.1 Terminus is an update to [DeepSeek V3.1](/deepseek/deepseek-chat-v3.1) that maintains the model's original capabilities while addressing issues reported by users, including language consistency and agent ca

Where to use it

Cheapest hosted endpoints.

Provider Access $/M in $/M out
DeepSeek Platform api direct $0.27 $0.95 Launch ↗
DeepInfra hosted inference $0.27 $0.95 Launch ↗
OpenRouter api aggregator $0.27 $0.95 Launch ↗
Performance

Speed across providers.

Tokens/sec and time-to-first-token measured against the same prompt template on each provider's API.

Provider Tokens/sec TTFT Total
OpenRouter 17.8 1622 ms 5576 ms
FAQ

Frequently asked.

How do I run DeepSeek: DeepSeek V3.1 Terminus?
DeepSeek: DeepSeek V3.1 Terminus is open-weight, so you can self-host on rented GPUs. See the Run It Yourself tab for GPU configurations + cost estimates, or use one of the hosted inference providers listed on this page.
Where can I access DeepSeek: DeepSeek V3.1 Terminus?
DeepSeek: DeepSeek V3.1 Terminus is available via DeepSeek Platform, DeepInfra, OpenRouter. Each access option lists its own pricing (per million tokens or hourly hosting).
How much does it cost to run DeepSeek: DeepSeek V3.1 Terminus?
API pricing starts at $0.27/M input tokens and $0.95/M output tokens. Self-hosting cost depends on the GPU you rent — see the Run It Yourself tab.
Is DeepSeek: DeepSeek V3.1 Terminus open-source or proprietary?
DeepSeek: DeepSeek V3.1 Terminus is open-weight under the license. You can download and self-host it.