Question 1

How do I use the DeepSeek API?

Accepted Answer

Create a China OpenRouter API key and point any OpenAI-compatible SDK at https://p.nat6.net/v1. Set the model to deepseek-v4.1-flash-1017. On pay-as-you-go keys, deepseek/deepseek-v4.1-flash-1017 pins every request to DeepSeek; DevPass coding plans do not support provider pinning. You do not need a separate DeepSeek account or SDK.

Question 2

Which DeepSeek models are available?

Accepted Answer

China OpenRouter serves 2 DeepSeek models: DeepSeek V4.1 Flash 1017, DeepSeek V4 Pro. Each model page lists per-token pricing, context window and capabilities.

Question 3

Does DeepSeek train on API data?

Accepted Answer

Yes. DeepSeek's published policy allows training on API traffic. Use provider routing rules in China OpenRouter to keep sensitive workloads on providers that do not.

Question 4

Where is DeepSeek based?

Accepted Answer

DeepSeek is headquartered in China. China OpenRouter shows each provider's location and data policy so you can route by compliance requirements.

Question 5

What happens if the DeepSeek API is down?

Accepted Answer

When you request a model without a provider prefix, China OpenRouter retries failed requests on other providers that serve the same model, so an outage at DeepSeek does not have to take your app down. Send X-No-Fallback: true with a provider-pinned model when every request must reach DeepSeek.

DeepSeek API

Data & Privacy

Available Models

DeepSeek V4.1 Flash 1017

DeepSeek V4 Pro

DeepSeek API questions