DeepSeek V3.1 Terminus

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 cons

Creator: DeepSeek
Lifecycle: Active
Context: 163.8K
Max output: —
Released: Sep 22, 2025
Status: up

Input: $0.21 / 1M tokens
Output: $0.79 / 1M tokens
Cached read: $0.13 / 1M tokens
Cached write: — / 1M tokens
Batch discount: —%
Source: OpenRouter
Verified: Apr 5, 2026 (High)

Capabilities

Modalities: text→text
Capabilities: reasoningpromptCachingfunctionCallingstructuredOutputs

Official Links

Intro

https://openrouter.ai/deepseek/deepseek-v3.1-terminus

Docs

https://openrouter.ai/deepseek/deepseek-v3.1-terminus

Pricing

https://openrouter.ai/models

Benchmark Coverage

Benchmark	Version	Score	Date	Source	Notes

Release History

Release	Alias	Lifecycle	Release Date	Deprecation	Shutdown	Summary
DeepSeek V3.1 Terminus	deepseek-deepseek-v3-1-terminus	Active	Sep 22, 2025	—	—	Model available via OpenRouter.

Host Coverage

Host	Type	Context	Pricing Note	Differences
OpenRouter	aggregator	163.8K	$0.21/1M in · $0.79/1M out via OpenRouter	—

Migration Guidance

Change Events

Date	Type	Title	Description	Source
Sep 22, 2025	family_added	DeepSeek V3.1 Terminus published	Model made available via OpenRouter.	OpenRouter

Other models from DeepSeek

DeepSeek Chat, DeepSeek Reasoner, DeepSeek V3, DeepSeek V3 0324, DeepSeek V3.1, DeepSeek V3.2, DeepSeek V3.2 Exp, DeepSeek V3.2 Speciale, R1, R1 0528, R1 Distill Llama 70B, R1 Distill Qwen 32B