LocalAI vs Open WebUI (2026): which should you pick?

Pick LocalAI if

• Fits if you want models running on your own hardware, with no data leaving it
• Works for developers who want a drop-in replacement for the OpenAI API

Look elsewhere if

• Skip it if you do not want to run software yourself, as it is a runtime to install and operate
• Too light for non-technical use, as you pick and download the models
• Not for you if you use Windows, as it is not listed on the install page
• Watch out: bigger models need more memory or a GPU for good speed
• Watch out: documentation pages have moved between addresses

Pick Open WebUI if

• Fits if your team wants its AI chat on its own servers, even with no internet connection
• Works for people running local models through Ollama who want a browser interface for them

Look elsewhere if

• Skip it if you don't want to run a server, because there's no hosted version to sign up for
• Not for you if you want a phone app, as none is listed, and the desktop app is labeled early alpha
• Not for you if you want your own branding for more than 50 users, unless you buy an enterprise license
• Watch out: enterprise prices aren't published, and licenses are sold only to registered organizations
• Watch out: since v0.6.6 the license isn't OSI-approved open source, and you supply every model or API key

LocalAI

• It is a runtime to install and operate yourself, through containers, a macOS app, Linux binaries or Kubernetes. Windows is not listed on the install page.
• You choose and download the models. The gallery lists 1,255 models, and larger ones need more memory or a GPU for good speed.
• No paid plan or hosted service is described on the pages read. The homepage offers a business contact link.
• Documentation pages have moved between addresses, for example from /installation/ to /docs/installation/.

Open WebUI

• There is no hosted service: you install and run it yourself with Docker, pip or Kubernetes, and supply your own models or provider API keys.
• Since v0.6.6 the license is not OSI-approved open source: deployments with more than 50 users must keep the Open WebUI branding unless they hold an enterprise license.
• The desktop app for macOS, Windows and Linux is labeled early alpha, and the docs point production deployments to Docker or Python.
• Enterprise license prices are not published, and licenses are sold only to registered organizations, not individuals.

LocalAI

Drop-in API compatibility

One binary serves an OpenAI-compatible API and also speaks the Anthropic, Ollama and ElevenLabs APIs, so most clients need only a new URL.

Swappable engines

A model can run on llama.cpp, vLLM, SGLang or MLX behind the same endpoint, and each engine is pulled in as a backend only when a model asks for it.

Text, voice, vision and media

Covers language models with tool calling, transcription, speech synthesis and voice cloning, vision and detection, plus image, video and music generation.

Agents and MCP

The local-ai chat command starts an agent that can run shell commands behind an approval gate, delegate to sub-agents and load MCP servers, plugins and skills.

CPU-first and distributed

The site says every feature ships a CPU path, with GPU support for CUDA, ROCm, SYCL, Metal and Vulkan, and routing across several machines.

Open WebUI

Any model in one interface

Chats with Ollama, OpenAI, Anthropic or any OpenAI-compatible provider. You can switch models mid-conversation or run two side by side to compare their answers.

Knowledge bases and RAG

Upload files and build knowledge bases searched with hybrid BM25 and vector search, or inject whole documents. The docs list 13 vector databases and 8 extraction engines.

Web search and code execution

Models can search the web and cite sources, and run Python in the browser or through Open Terminal, which gives the model a real terminal and filesystem to work in.

Tools, functions and MCP

Extend it with Python tools and pipelines, MCP servers and OpenAPI endpoints, or install prompts, models, tools and functions shared by the community.

Multi-user access control

Roles, groups and per-model permissions, with SSO through OIDC or LDAP, SCIM 2.0 provisioning and API keys for programmatic access.

Channels and notes

Channels are shared spaces where teammates and @-tagged models post in one timeline. Notes is an editor whose pages can be attached to a chat as context.

LocalAI

• Open source$0

  MIT-licensed software you run yourself, on a CPU or on a GPU. The site also invites businesses to get in touch.

Open WebUI

• Standard UseFree

  Self-hosted internal use with the original Open WebUI branding exactly intact. No enterprise agreement is needed.

• Enterprise UseCustom

  An enterprise license for white-labeling and rebranding, enterprise-only offerings such as Terminals, SLA support and Long-Term Support. Sold to registered organizations.