DeepSeek V3.1 Terminus pricing & benchmarks
DeepSeek V3.1 Terminus is available from DeepSeek at $0.270 per million input tokens and $1.00 per million output tokens ($0.453 blended at 3:1). It accepts up to 163,840 tokens of context. 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 capabilities, further …
Pricing
Per million tokens · OpenRouter
Input$0.270
Output$1.00
Blended (3:1)$0.453
Specification
deepseek/deepseek-v3.1-terminus
Context window164K
Max output33K
ReleasedSep 2025
LicenceOpen weights
Modalitiesin:text, out:text
No independently-run benchmark scores are published for DeepSeek V3.1 Terminus yet. We show nothing rather than reprinting an unverified figure.
Where to run DeepSeek V3.1 Terminus
5 hosts · 1.2× between cheapest and dearest. Blended at 3:1. ⚠ marks an option serving less context than the best available, or re-pricing above a prompt-length threshold. Bracketed labels are the provider's own service tier or region.
| Host | Blended $/1M | In / Out | Context | Weights | Uptime 24h |
|---|---|---|---|---|---|
| DeepInfra | $0.440 | $0.270 / $0.950 | 164K | fp4 | 99.7% |
| SiliconFlow | $0.453 | $0.270 / $1.00 | 164K | fp8 | 97.8% |
| Novita ⚠ 131K context, not 164K |
$0.453 | $0.270 / $1.00 | 131K | fp8 | 100.0% |
| AtlasCloud ⚠ 131K context, not 164K |
$0.462 | $0.300 / $0.950 | 131K | fp8 | 99.7% |
| StreamLake ⚠ 128K context, not 164K |
$0.514 | $0.343 / $1.03 | 128K | — | 99.7% |
Host prices and uptime from OpenRouter, synced 2026-08-08. Lower-precision weights (fp4, fp8) can cost less and score worse than the same model at bf16 — the score above is not host-specific.
Compare DeepSeek V3.1 Terminus
DeepSeek V3.1 Terminus vs Qwen3.8 Max
DeepSeek V3.1 Terminus vs Claude Opus 5
DeepSeek V3.1 Terminus vs Gemini 3.6 Flash
DeepSeek V3.1 Terminus vs Kimi K3
DeepSeek V3.1 Terminus vs GPT-5.6 Luna
DeepSeek V3.1 Terminus vs GPT-5.6 Terra
DeepSeek V3.1 Terminus vs GPT-5.6 Sol
DeepSeek V3.1 Terminus vs Grok 4.5
FAQ
How much does DeepSeek V3.1 Terminus cost?
DeepSeek V3.1 Terminus costs $0.270 per million input tokens and $1.00 per million output tokens on OpenRouter. At a 3:1 input:output mix that blends to $0.453 per million tokens.
What is DeepSeek V3.1 Terminus's context window?
DeepSeek V3.1 Terminus accepts up to 163,840 tokens of context, and can generate up to 32,768 output tokens.