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…
Model by DeepSeek
Install
Pick your client. Read the repository before you give any tool access to your data.
{
"model": "deepseek/deepseek-v3.1-terminus",
"baseURL": "https://openrouter.ai/api/v1"
}OpenAI-compatible API: point any OpenAI SDK at the base URL and use this model id.
Settings it needs
OPENROUTER_API_KEYrequiredsecret
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About
Use cases: model-inference
Reviews
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Price and limits
| Variant | Input $/M tokens | Output $/M tokens | Cached input $/M |
|---|---|---|---|
| Standard | $0.27 | $1 | — |
Price as of Oct 26, 2026 from OpenRouter · provider's own prices: api-docs.deepseek.com. Prices change often; check before you rely on one.
- Provider
- DeepSeek
- Model id
deepseek/deepseek-v3.1-terminus- Context window
- 163,840 tokens (164K)
- Max output
- 147,456 tokens
- Input
- text
- Output
- text
- Tool calling
- Yes
- Structured outputs
- Yes
- Reasoning
- Yes
- Weights
- Open: deepseek-ai/DeepSeek-V3.1-Terminus
- Released
- Sep 22, 2025
- Knowledge cutoff
- 2025-03-31
Details
- Auth
- API key
- License
- License unknown
- Website
- www.deepseek.com
- First seen
- Oct 24, 2026
- Last checked
- Oct 26, 2026
- Source
- OpenRouter
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Cite this page
DeepSeek V3.1 Terminus: price, context window, tool use. Agent Mart. https://agentmart.dev/models/deepseek-deepseek-v3-1-terminus (last updated 2026-10-26)