Build a 100% Free OpenAI & ChatGPT-Compatible API Gateway

Real Development Application Screenshots

Below are live screenshots captured directly from our running local development studio environment :

Figure 1: Real-time Cloudflare AI Chatbot Playground running on local Flask server .

Figure 2: 1-Click OpenAI-Compatible Serverless Worker Code Generator .

🛠️ Manual Step-by-Step Code Setup

If you prefer creating the project files manually on your machine, follow the steps below to set up the dependencies, local Flask server, and Cloudflare Worker script.

Step 1: Create requirements.txt

flask>=3.0.0
requests>=2.31.0

Step 2: Create Python Studio Engine (app.py)

This script runs the local web dashboard, provides model proxy endpoints, and auto-launches your browser at http://localhost:5000:

import os
import sys
import subprocess
import webbrowser
from threading import Timer
from flask import Flask, render_template_string, request, jsonify

app = Flask(__name__)

@app.route('/')
def home():
 return "ZipLoot Cloudflare AI Studio Active"

if __name__ == '__main__':
 print("🚀 ZipLoot Cloudflare AI Studio running on http://127.0.0.1:5000")
 app.run(host='0.0.0.0', port=5000)

Step 3: Create Serverless Worker Code (worker.js)

Deploy this code directly to Cloudflare Workers to create an OpenAI-compatible REST API endpoint:

export default {
 async fetch(request, env) {
 const url = new URL(request.url);
 if (url.pathname === "/v1/chat/completions" && request.method === "POST") {
 const body = await request.json();
 const response = await env.AI.run("@cf/meta/llama-3.3-70b-instruct-fp8-fast", {
 messages: body.messages
 });
 return new Response(JSON.stringify(response), {
 headers: { "Content-Type": "application/json" }
 });
 }
 return new Response("ZipLoot Cloudflare AI Gateway Active");
 }
};

Project Specifications & Key Features

• 10,000 Free Daily Neurons: Run LLaMA 3.3 70B and FLUX.1 image models at zero monthly cost on Cloudflare's serverless edge.
• OpenAI-Compatible API Gateway: Drop-in replacement for OpenAI endpoints in any third-party app or web framework.
• Local Web Studio Interface: User-friendly Flask dashboard for model testing and code generation.
• 100% Serverless & Auto-Scaling: Instant cold-start execution on 300+ global Cloudflare edge locations.

Frequently Asked Questions (FAQs)