Open WebUI
KI-Chat & AssistentenA self-hosted AI chat UI compatible with Ollama and OpenAI-compatible APIs. Capable of running fully offline.
Was ist Open WebUI?
Open WebUI is an open-source, self-hosted AI chat platform. It supports a wide range of LLM runners including Ollama, OpenAI-compatible APIs, and more, and can operate completely offline. It offers advanced features such as RAG (Retrieval-Augmented Generation), voice and video calls, document processing, and Python tool calling. It supports 9 vector databases including ChromaDB, PostgreSQL, Qdrant, and Milvus, and includes prompt injection protection via LLM-Guard. It is one of the most popular self-hosted AI tools of 2026 for individuals and organizations that prioritize privacy.
Preispläne
Hauptfunktionen
Vor- & Nachteile
Vorteile
- ●Completely free and open source
- ●Works offline
- ●Excellent privacy protection
Nachteile
- ●Requires technical knowledge such as Docker for setup
- ●Japanese localization of the UI is incomplete
- ●Requires your own GPU/server
Häufig gestellte Fragen
F. Is Open WebUI free?
A. Yes, it is completely open source and free. However, you need a server or PC (possibly with a GPU) to run it.
F. What is the difference from Ollama?
A. Ollama is an engine for running LLMs locally, while Open WebUI is its frontend (user interface). By connecting Open WebUI to Ollama, you can use local AI through a ChatGPT-like UI.
Verwandte Tools
ChatGPT
Der weltweit meistgenutzte KI-Konversationsassistent, entwickelt von OpenAI. Angetrieben von GPT-5.4 Thinking, bewältigt er vielfältige Aufgaben wie Textgenerierung, Programmierung, Datenanalyse sowie Bild- und Videoerstellung.
Claude
Ein KI-Assistent von Anthropic mit Fokus auf Sicherheit und Genauigkeit. Bietet ein Kontextfenster von 1 Million Token und leistungsstarke Analyse- und Programmierfähigkeiten mit Claude Opus 4.6/Sonnet 4.6.
Gemini
Eine multimodale KI, entwickelt von Google DeepMind. Angetrieben von Gemini 3.1 Pro/2.5 Flash, versteht sie umfassend Text, Bilder, Audio und Video mit tiefer Google-Produkt-Integration.
Copilot (Microsoft)
An AI assistant developed by Microsoft. Integrated into Windows, Edge, and Office products, it supports everything from everyday tasks to business productivity.
Poe
An AI chat platform by Quora. Access multiple AI models from a single app.
Character.AI
An AI chat service specializing in character conversations. Chat with AI personas of all kinds.