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DeepSeek

deepseek-v3.1

DeepSeek-V3.1 Terminus is an update to DeepSeek 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...

TextReasoningToolsOpen Weights128KCache131.1K
InputFree
OutputFree
Context128K
Endpointsopenai

Performance

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§ 01

Pricing

Input price$0.00 · 1M tokens
Output price$0.00 · 1M tokens
Context window128K tokens
Compatible endpointsopenai
VendorDeepSeek
§ 02

Call deepseek-v3.1 from your code

Point any OpenAI-compatible SDK at UnoRouter and request the model by name. Replace YOUR_API_KEY with a real key from your dashboard.

bash
curl https://api.unorouter.ai/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "deepseek-v3.1",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Sign in to auto-fill your API key

§ 03

Frequently asked questions

How much does deepseek-v3.1 cost per 1M tokens?

Input is priced at $0.00 per 1M tokens, output at $0.00 per 1M tokens. Billing is per token, no rounding to batch sizes.

How do I access deepseek-v3.1 via API?

Send requests to the UnoRouter /v1/chat/completions endpoint with model=deepseek-v3.1. Any OpenAI-compatible client library works. Authentication uses a standard Bearer token.

What is the context window of deepseek-v3.1?

deepseek-v3.1 supports a context window of 128K tokens, shared between your prompt and the model's response.

§ 04

Similar models

Try deepseek-v3.1 now

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