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Open Source ChatGPT Alternatives

Discover 13 open source alternatives to ChatGPT. All free, community-driven, and actively maintained.

ChatGPT logo

What is ChatGPT?

An AI chatbot that uses large language models to generate human-like responses to user queries and prompts.

Visit ChatGPT
ollama
ollama logo

ollama

Get up and running with Kimi-K2.5, GLM-5, MiniMax, DeepSeek, gpt-oss, Qwen, Gemma and other models.

LLM
open-webui
open-webui logo

open-webui

User-friendly AI Interface (Supports Ollama, OpenAI API, ...)

LLM UI
unsloth
unsloth logo

unsloth

Web UI for training and running open models like Gemma 4, Qwen3.5, DeepSeek, gpt-oss locally.

LLM
anything-llm
anything-llm logo

anything-llm

The all-in-one AI productivity accelerator. On device and privacy first with no annoying setup or configuration.

LLM
jan
jan logo

jan

Jan is an open source alternative to ChatGPT that runs 100% offline on your computer.

ChatGPT Alternative
LibreChat
LibreChat logo

LibreChat

Enhanced ChatGPT Clone: Features Agents, MCP, DeepSeek, Anthropic, AWS, OpenAI, Responses API, Azure, Groq, o1, GPT-5, Mistral, OpenRouter, Vertex AI, Gemini, Artifacts, AI model switching, message search, Code Interpreter, langchain, DALL-E-3, OpenAPI Actions, Functions, Secure Multi-User Auth, Presets, open-source for self-hosting. Active.

ChatGPT Clone
khoj
khoj logo

khoj

Your AI second brain. Self-hostable. Get answers from the web or your docs. Build custom agents, schedule automations, do deep research. Turn any online or local LLM into your personal, autonomous AI (gpt, claude, gemini, llama, qwen, mistral). Get started - free.

Agent
onyx
onyx logo

onyx

Open Source AI Platform - AI Chat with advanced features that works with every LLM

AI Chat
SillyTavern
SillyTavern logo

SillyTavern

LLM Frontend for Power Users.

AI
AionUi
AionUi logo

AionUi

Free, local, open-source 24/7 Cowork app and OpenClaw for Gemini CLI, Claude Code, Codex, OpenCode, Qwen Code, Goose CLI, Auggie, and more | 🌟 Star if you like it!

AI Agent
leon
leon logo

leon

🧠 Leon is your open-source personal assistant.

AI
carrot
carrot logo

carrot

AI 工具导航大全,帮你快速筛选免费、实用、高效的网站资源

ChatGPT
RWKV-Runner
RWKV-Runner logo

RWKV-Runner

A RWKV management and startup tool, full automation, only 8MB. And provides an interface compatible with the OpenAI API. RWKV is a large language model that is fully open source and available for commercial use.

LLM Management