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xtekky/gpt4free

🔥 Hot66,244PythonAudience · developerComplexity · 3/5ActiveLicenseSetup · hard

TLDR

Python library that gives you a single interface to use many AI models and image generators for free, including ChatGPT, Claude, and others, without needing paid API keys.

Mindmap

mindmap
  root((repo))
    What it does
      Unified AI interface
      Route to many models
      Free access layer
    How it works
      Provider adapters
      Browser automation
      Official APIs
    Access methods
      Python client
      JavaScript client
      REST API
      Web GUI
    Features
      Text generation
      Image generation
      Audio and video
      Docker support
    Use cases
      Prototype building
      Model comparison
      Cost-free testing

Things people build with this

USE CASE 1

Build a chatbot prototype that uses multiple AI models without paying for API access.

USE CASE 2

Compare how different language models respond to the same prompt to pick the best one.

USE CASE 3

Create an image generation tool that can switch between free providers automatically.

USE CASE 4

Experiment with AI capabilities during development before committing to a paid service.

Tech stack

PythonJavaScriptChrome/ChromiumDockerREST API

Getting it running

Difficulty · hard Time to first run · 1h+

Requires Docker and Chromium/Chrome browser automation; multiple backend services need to be running simultaneously.

Use it freely, but any project you distribute that includes this code must also be GPL-licensed and open source.

In plain English

GPT4Free (also known as g4f) is a Python library and toolkit that aggregates access to multiple large language models and AI image generation services through unofficial provider adapters. The core idea is to give developers a single, unified Python or JavaScript interface that can route requests to various AI services, including many that offer free tiers or can be accessed through browser automation without a paid API key. The way it works is through a collection of provider modules, each implementing the interface for a specific service. When you call the client to generate text or an image, g4f routes your request to whichever provider you specify (or selects one automatically). Some providers work by calling official public APIs, others by automating a browser in the background (using Chrome or Chromium) to interact with web interfaces. The library exposes this through a Python client, a JavaScript browser client, a command-line interface, and an OpenAI-compatible REST API called the Interference API, meaning software designed to talk to OpenAI can talk to g4f with minimal changes. Additional features include a local web GUI for chatting with models, support for image, audio, and video generation, and Docker images for containerized deployment. You would use g4f when you are experimenting with multiple AI models and want to switch between them easily, building a prototype that needs AI capabilities without committing to a paid API, or researching how different models respond to the same prompts. The legal and terms-of-service status of some provider adapters is uncertain, as they may bypass official API access controls. The library requires Python 3.10 or higher and optionally Chrome for browser-automated providers.

Copy-paste prompts

Prompt 1
Show me how to use gpt4free to call ChatGPT, Claude, and Gemini from Python with a single client interface.
Prompt 2
How do I set up gpt4free to automatically fall back to a different AI provider if one fails?
Prompt 3
Create a simple web app using gpt4free's REST API that works as a drop-in replacement for OpenAI's API.
Prompt 4
How can I use gpt4free to generate images with different providers and compare the results?
Prompt 5
Set up gpt4free with Docker so I can run it as a service and call it from other applications.
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Generated 2026-05-18 · Model: sonnet-4-6 · Verify against the repo before relying on details.