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Open WebUI logo

Open WebUI

Self-hosted AI platform with ChatGPT-like interface for local and cloud LLMs.

freeupdated Aug 16, 2026

Extensible, self-hosted AI platform with 290M+ Docker pulls and 124K+ GitHub stars. Supports Ollama, OpenAI-compatible APIs, and any Chat Completions backend. Features built-in RAG, multi-user RBAC, voice/video calls, Python function workspace, model builder, and web browsing. Runs entirely offline with enterprise features including SSO and audit logging.

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A detailed review by the aicoolies team — click to read

Open WebUI is the most widely deployed open-source AI interface, providing a ChatGPT-like web experience that runs entirely on your infrastructure. Created by Timothy Jaeryang Baek, it evolved from an Ollama frontend into a full backend-agnostic AI platform supporting any OpenAI-compatible API, direct Ollama connections, and custom pipeline integrations.

Installation takes a single Docker command with no account required. The platform supports GPU acceleration via CUDA, Kubernetes deployment with official Helm charts, and slim image variants for environments with limited storage. The chat interface allows switching between local and cloud backends simultaneously, enabling teams to use different models for different tasks through a unified interface.

Built-in RAG handles document upload, chunking, embedding, and retrieval without external vector database infrastructure. The multi-user architecture includes role-based access control with user, power user, and admin roles, plus SSO integration and audit logging for enterprise deployments. A Python function calling workspace enables custom tool integrations written directly in the browser.

Additional features include a model builder for custom agents, a masked arena for blind A/B model testing, note-taking with Markdown and AI enhancement, voice and video call support with multiple STT/TTS providers, and a community ecosystem at openwebui.com for sharing prompts, tools, and configurations. The platform handles everything from individual developer workstations to team-wide AI deployments.

Pricing

Completely free and open source; self-hosted

Platforms

Docker; self-hosted; Linux, macOS, Windows

Categories

Tags

Use Cases

Ollama logo

Ollama

Run LLMs locally with one command

Tool for running large language models locally on your machine with a simple CLI interface. Download and run Llama 3, Mistral, Gemma, Phi, Code Llama, and dozens of other open-source models with a single command. Features model management, GPU acceleration (NVIDIA/AMD/Apple Silicon), OpenAI-compatible API server, Modelfile for customization, and multi-model switching. Ideal for offline AI development, privacy-sensitive use cases, and local testing. 120K+ GitHub stars.

Open Source
LM Studio logo

LM Studio

Run local LLMs with an intuitive desktop GUI and OpenAI-compatible API server.

Free desktop application by Element Labs for discovering, downloading, and running open-source LLMs locally. Features a curated Hugging Face model browser, side-by-side model comparison, parameter tuning, and an OpenAI-compatible API server on localhost:1234. Powered by llama.cpp with Metal acceleration for Apple Silicon.

free
Khoj logo

Khoj

Open-source AI second brain with deep research and RAG

Khoj is an open-source personal AI app that serves as a self-hostable second brain. It connects to your documents — PDFs, Markdown, Notion, Word — and uses RAG to answer questions grounded in your knowledge base. Supports any local or cloud LLM including Llama, Claude, GPT, and Gemini. Features custom agents, scheduled automations, deep research mode, semantic search, and Obsidian, Emacs, and WhatsApp integrations. Over 33,000 GitHub stars, YC-backed.

freemiumOpen Source
Onyx logo

Onyx

Self-hosted AI platform with RAG, agents, and 40+ connectors

Onyx is an open-core, self-hostable AI knowledge platform for enterprise search, RAG chat, deep research, custom agents, and workplace connectors. It connects to 40+ apps, supports permission-aware retrieval, and offers Cloud, Docker/Kubernetes, and enterprise deployment paths for teams that need controlled internal AI search.

freemiumOpen Source

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Used in Stacks

Comparisons

Open WebUI vs AnythingLLM — Self-Hosted Chat Interface vs All-in-One AI Desktop App

Open WebUI and AnythingLLM are the two leading self-hosted AI interfaces for running local and cloud LLMs with privacy. Open WebUI provides a polished ChatGPT-like web interface with multi-model support, RAG pipelines, and tool calling. AnythingLLM offers a desktop application with built-in document processing, vector storage, agents, and workspace-based conversations that bundle everything into a single installable package.

Open WebUIAnythingLLM

Onyx vs Open WebUI — Enterprise AI Knowledge Platform vs Self-Hosted LLM Chat Interface

Onyx provides an enterprise knowledge management platform that connects AI models to company documents, Slack messages, and internal data sources for organizational search and Q&A. Open WebUI offers a self-hosted chat interface for interacting with local and remote LLMs with conversation management and model switching. Onyx wins for enterprise knowledge access while Open WebUI wins as a personal LLM interface.

OnyxOpen WebUI

Open WebUI vs LobeChat — Feature-Rich Chat Platform vs Agent-Powered AI Workspace

Open WebUI and LobeChat are the two most popular open-source ChatGPT alternatives, both with 50,000+ GitHub stars. Open WebUI provides the most complete ChatGPT replica with RAG, voice, and a pipeline plugin system. LobeChat offers a modern agent workspace with 10,000+ MCP plugins, Agent Groups for multi-agent collaboration, and scheduled tasks. This comparison helps self-hosted AI enthusiasts choose their primary chat interface.

Open WebUILobeChat

PrivateGPT vs Open WebUI — Offline Document Q&A vs Extensible Chat Platform

PrivateGPT and Open WebUI are both self-hosted AI platforms with 50,000+ GitHub stars, but they serve different primary use cases. PrivateGPT focuses on 100% private document Q&A with zero data leakage. Open WebUI provides a feature-rich ChatGPT-like interface with plugins, pipelines, and multi-model support. This comparison helps you choose between dedicated document intelligence and a general-purpose AI chat platform.

PrivateGPTOpen WebUI

AnythingLLM vs Open WebUI — All-in-One RAG Platform vs Customizable Chat Interface

AnythingLLM and Open WebUI are the two most popular self-hosted AI platforms, with a combined 110,000+ GitHub stars. AnythingLLM bundles RAG, agents, and multi-user management into a zero-config desktop app. Open WebUI focuses on being the most customizable and extensible ChatGPT-like interface for local and cloud models. This comparison helps you choose the right self-hosted AI foundation for your team.

AnythingLLMOpen WebUI

FAQ

What is Open WebUI?

Extensible, self-hosted AI platform with 290M+ Docker pulls and 124K+ GitHub stars. Supports Ollama, OpenAI-compatible APIs, and any Chat Completions backend. Features built-in RAG, multi-user RBAC, voice/video calls, Python function workspace, model builder, and web browsing. Runs entirely offline with enterprise features including SSO and audit logging.

Is Open WebUI free?

Yes — Open WebUI is free to use. Completely free and open source; self-hosted

What are the best Open WebUI alternatives?

The top editor-verified Open WebUI alternatives are Ollama, LM Studio, Khoj, and more.

How does Open WebUI score in our review?

Our hands-on review scores Open WebUI 88/100 overall, based on speed, privacy, and developer-experience testing.