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Open WebUI Review 2026 — Best Self-Hosted AI Chat Interface
Open WebUI is a free, self-hosted ChatGPT alternative with RAG, multi-user support, and plugin extensions. Deploys in seconds via Docker. 40K+ GitHub stars.
Open WebUI provides a browser-based interface for running AI on infrastructure you control. It connects to Ollama, OpenAI, Anthropic, and other compatible providers, and supports chat, model management, tools, retrieval, files, voice, vision, and image generation.
It is used by individuals, developers, teams, and organizations that want a shared interface for local or hosted models. The software is free to deploy as-is; enterprise licensing, support, and branding options are available, but no official pricing page was found during this search.
Features
- Connects to Ollama, OpenAI, Anthropic, and OpenAI-compatible providers
- Provides chat, model management, files, knowledge collections, and RAG
- Supports tools, MCP servers, OpenAPI tool servers, and Python functions
- Offers OpenAI-compatible and Anthropic-compatible API endpoints
- Includes voice, vision, image generation, search, and code execution
- Supports SSO, RBAC, audit logs, on-premises, and air-gapped deployment
- Runs as a browser-based Progressive Web App on desktop and mobile
- Open WebUI License with branding-protection clause
Use cases
- Run local language models through a shared web interface
- Connect multiple cloud and self-hosted model providers
- Build retrieval-based assistants over files and knowledge collections
- Automate chat, model, file, and RAG workflows through the API
- Deploy AI tools for teams with access controls and audit logs
- Use MCP, OpenAPI, or Python tools in model-driven workflows