Overview
Crazyrouter is fully compatible with the OpenAI API format. Migrating from OpenAI or other providers requires changing just two parameters:
- Base URL →
https://crazyrouter.com/v1
- API Key → Your Crazyrouter
sk-xxx key
Get an API Key
Top Up Balance
Go to the Top Up page and select a top-up amount
Create a Token
Go to the Tokens page, click Create Token, and get an sk-xxx format API Key
Migrating from OpenAI
Before
from openai import OpenAI
client = OpenAI(
api_key="sk-openai-xxx"
# Default base_url: https://api.openai.com/v1
)
After
from openai import OpenAI
client = OpenAI(
api_key="sk-xxx", # Crazyrouter API Key
base_url="https://crazyrouter.com/v1" # Crazyrouter URL
)
Migrating from Anthropic
from openai import OpenAI
client = OpenAI(
api_key="sk-xxx",
base_url="https://crazyrouter.com/v1"
)
# Call Claude models via OpenAI format
response = client.chat.completions.create(
model="claude-sonnet-4-20250514",
messages=[{"role": "user", "content": "Hello"}]
)
import anthropic
client = anthropic.Anthropic(
api_key="sk-xxx",
base_url="https://crazyrouter.com" # Note: no /v1
)
response = client.messages.create(
model="claude-sonnet-4-20250514",
max_tokens=1024,
messages=[{"role": "user", "content": "Hello"}]
)
Migrating from Google Gemini
from openai import OpenAI
client = OpenAI(
api_key="sk-xxx",
base_url="https://crazyrouter.com/v1"
)
response = client.chat.completions.create(
model="gemini-2.5-pro",
messages=[{"role": "user", "content": "Hello"}]
)
Environment Variables
It’s recommended to configure via environment variables to avoid hardcoding keys in your code:
export OPENAI_API_KEY=sk-xxx
export OPENAI_BASE_URL=https://crazyrouter.com/v1
$env:OPENAI_API_KEY = "sk-xxx"
$env:OPENAI_BASE_URL = "https://crazyrouter.com/v1"
from openai import OpenAI
client = OpenAI() # Automatically reads environment variables
Compatibility
| Feature | Compatibility |
|---|
| Chat Completions | Fully compatible |
| Streaming | Fully compatible |
| Function Calling | Fully compatible |
| Vision | Fully compatible |
| Embeddings | Fully compatible |
| TTS / STT | Fully compatible |
| Images (DALL-E) | Fully compatible |
| Anthropic Messages API | Fully compatible |
| Gemini Native API | Fully compatible |
Crazyrouter supports OpenAI, Anthropic, and Gemini API formats simultaneously. Choose whichever format you’re most familiar with.
