Base URL

API ??

https://modelrelayapis.cc/v1

Available Models

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• deepseek-v4-flash ? Fast, affordable (Trial / Starter / Standard / Pro)?????Trial / Starter / Standard / Pro ????
• deepseek-v4-pro ? Higher quality (Pro plan only)?????? Pro ???

Setup Steps

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1. In Open WebUI, go to Admin Panel ? Settings ? Connections.
2. Set OpenAI API Base URL to https://modelrelayapis.cc/v1.
3. Enter your sk-gateway API Key.
4. Add model: deepseek-v4-flash (or deepseek-v4-pro for Pro plan).
5. Save and refresh the model list.

1. ? Open WebUI ??????? ? ?? ? ???
2. OpenAI API Base URL ?? https://modelrelayapis.cc/v1
3. ?? sk-gateway API Key?
4. ???? deepseek-v4-flash?Pro ???? deepseek-v4-pro??
5. ??????????

Python Example

Python ??

from openai import OpenAI

client = OpenAI(
    base_url="https://modelrelayapis.cc/v1",
    api_key="sk-gateway-YOUR-KEY"
)

response = client.chat.completions.create(
    model="deepseek-v4-flash",
    messages=[{"role": "user", "content": "Hello, how are you?"}]
)

print(response.choices[0].message.content)

Quick curl Test

curl ????

curl https://modelrelayapis.cc/v1/chat/completions   -H "Content-Type: application/json"   -H "Authorization: Bearer sk-gateway-YOUR-KEY"   -d '{"model":"deepseek-v4-flash","messages":[{"role":"user","content":"Hello"}]}'

Common Errors

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