Open Source · backend

Use Yi Lightning with Flask

Updated 2026-05-21 · By XALEN

How to use Yi Lightning (Open Source, 200B MoE) with Flask. Install, authenticate, and make your first API call in minutes. Working code example included.

Model

Yi Lightning

200B MoE · 128K context · $0.04 input

Framework

Flask

backend · pip install xalen flask

1. Install

pip install xalen flask

2. Code

from flask import Flask, request, jsonify
from xalen import XALEN

app = Flask(__name__)
client = XALEN(api_key="xln_test_YOUR_KEY")

@app.route("/chat", methods=["POST"])
def chat():
    data = request.json
    response = client.chat.completions.create(
        model="yi-lightning",
        messages=data["messages"]
    )
    return jsonify({"reply": response.choices[0].message.content})

if __name__ == "__main__":
    app.run()

Yi Lightning with Other Frameworks

Python JavaScript React Next.js FastAPI Django Express.js Flutter

Other Models with Flask

Vedika Standard Vedika Fast Vedika Pro Ultra Vedika Vision Vedika Code Vedika Pandit Voice

200+ models. One API. Works with any framework.

Get API Key

Last updated: 2026-05-21