---
title: DeepSeek: DeepSeek V3.1 Terminus — Context and Pricing
canonical: https://prompeteer.ai/models/deepseek-deepseek-v3-1-terminus
updated: 2026-09-20T00:00:00-07:00
source: OpenRouter /models
---

# DeepSeek: DeepSeek V3.1 Terminus

DeepSeek: DeepSeek V3.1 Terminus offers a 163,840-token context window at $0.27 per 1M input tokens and $1.00 per 1M output tokens.

| Attribute | Value |
| --- | --- |
| Context window | 163,840 tokens |
| Input price | $0.27 / 1M |
| Output price | $1.00 / 1M |
| Input modalities | text |
| Model id | deepseek/deepseek-v3.1-terminus |

## FAQ

**What is the context window of DeepSeek: DeepSeek V3.1 Terminus?**

DeepSeek: DeepSeek V3.1 Terminus supports up to 163,840 tokens of context.

**How much does DeepSeek: DeepSeek V3.1 Terminus cost?**

$0.27 per 1M input tokens and $1.00 per 1M output tokens (via OpenRouter /models, as of Sep 20, 2026).

**What input types does DeepSeek: DeepSeek V3.1 Terminus support?**

DeepSeek: DeepSeek V3.1 Terminus accepts text.

Source: Data via OpenRouter /models — as of Sep 20, 2026.

## Sources and scope

[OpenRouter model catalogue feed](https://openrouter.ai/api/v1/models)

- [DeepSeek: DeepSeek V3.1 Terminus source listing](https://openrouter.ai/deepseek/deepseek-v3.1-terminus)

These are provider-catalog specifications, not a task-quality benchmark. Prices describe the source listing and may vary by provider or routing. Unknown values are shown as — when the feed did not supply that value.

## Try your task

[Open the prompt composer](/create)

Open the composer and choose a supported target model. The reference catalogue may include models unavailable in the composer.