Enterprise · backend
Use Arctic Large with FastAPI
Updated 2026-05-21 · By XALEN
How to use Arctic Large (Enterprise, 480B (17B active)) with FastAPI. Install, authenticate, and make your first API call in minutes. Working code example included.
Model
Arctic Large
480B (17B active) · 128K context · $0.06 input
Framework
FastAPI
backend · pip install xalen fastapi uvicorn
1. Install
pip install xalen fastapi uvicorn
2. Code
from fastapi import FastAPI
from pydantic import BaseModel
from xalen import XALEN
app = FastAPI()
client = XALEN(api_key="xln_test_YOUR_KEY")
class ChatRequest(BaseModel):
messages: list
@app.post("/chat")
async def chat(req: ChatRequest):
response = client.chat.completions.create(
model="arctic-large",
messages=[m.dict() for m in req.messages]
)
return {"reply": response.choices[0].message.content}
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Get API KeyLast updated: 2026-05-21