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 optimizing the model's...
With CoreAI, you can start chatting with DeepSeek: DeepSeek V3.1 Terminus instantly — no separate subscription needed. CoreAI lets you chat with DeepSeek: DeepSeek V3.1 Terminus alongside 300+ other AI models from DeepSeek and other providers like OpenAI, Anthropic, Google, Meta, and more.
Measured against all 441 chat models CoreAI serves, DeepSeek: DeepSeek V3.1 Terminus sits at #323 for context capacity — 131K tokens, roughly 98,304 words or 197 pages of text in a single conversation. On price, it is the #34 cheapest of 205 standard-tier models by input cost. It joined the catalog on 2025-09-22. It supports step-by-step reasoning (thinking mode).
Every model in this table is available on CoreAI — open the web app and run the same prompt through DeepSeek: DeepSeek V3.1 Terminus and DeepSeek: DeepSeek V3.2 Exp side by side to judge with your own eyes.
A typical question (about 1,000 tokens in, 500 out) runs $0.00077 on DeepSeek: DeepSeek V3.1 Terminus's raw per-token rates; a heavy session with a 50K-token document costs about $0.019. On CoreAI you don't juggle these numbers — one subscription covers DeepSeek: DeepSeek V3.1 Terminus and 300+ other models under a plan usage limit, with no API keys. See plans.
DeepSeek: DeepSeek V3.1 Terminus handles 131K tokens of context — roughly 98,304 words, or about 197 pages of text in one conversation.
DeepSeek: DeepSeek V3.1 Terminus's underlying rates are $0.27 per 1M input tokens and $1 per 1M output tokens. On CoreAI it is included in one subscription alongside 300+ models, so there is no per-token billing to manage.
No — DeepSeek: DeepSeek V3.1 Terminus is text-only. If you need image understanding, its standard-tier peers with vision are listed in the comparison table above.
Yes. DeepSeek: DeepSeek V3.1 Terminus can work through problems step by step before answering; on CoreAI you can toggle thinking mode per message.
Open the CoreAI web app or the iOS/Android app, pick DeepSeek: DeepSeek V3.1 Terminus in the model selector, and chat — no API key, no per-token billing. One subscription covers DeepSeek: DeepSeek V3.1 Terminus and 300+ other models.
The closest alternatives on CoreAI are DeepSeek: DeepSeek V3.2 Exp, Meta: Muse Glimmer 30B, IBM: Granite 4.0 Micro — similar capability. The fastest way to choose is running one prompt through them side by side in CoreAI's Compare view.
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