Assembly Line

NextChat vs Open WebUI

NextChat and Open WebUI are both AI assistants software. NextChat is open source under MIT, with 89k GitHub stars. Open WebUI is open source under a license set out in its repository, with 158k GitHub stars.

Which to pick

Pick NextChat when
You want a fast personal chat front end you can deploy to Vercel or run as a desktop app.
Pick Open WebUI when
You run local or private models and want a full-featured chat front end for yourself or a team.

Side by side

What it does

A lightweight AI chat client for web and desktop that works with your own API keys for OpenAI, Claude, Gemini, DeepSeek and others, or through its paid account service.

A self-hosted web interface for chatting with local models through Ollama or any OpenAI-compatible API, with RAG, tools, user management and pipelines.

Watch out

The project now steers users toward its own paid service, and team features are limited.

Its custom licence restricts removing Open WebUI branding for larger deployments, and it is still pre-1.0.

Ready for

Usable

Production-ready

Runs as

Self-hosted server, desktop app and cloud service

Self-hosted server

Built with

TypeScript, Next.js, React and Tauri

Python, Svelte and SvelteKit

Source code

Open source, MIT (permissive)

Open source, license unclear on GitHub

What the license allows

You can build it into a product you sell, as long as you keep its copyright notice.

GitHub could not read the license. Check it in the repository before reusing any code.

How widely known

89k GitHub stars

158k GitHub stars

How established

Established: started 3 years ago, latest release v2.16.1.

Established: started 3 years ago, latest release v0.12.5.

Other comparisons

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Both sides were judged on 2026-11-03 from each project's README and GitHub data. License, age and popularity lines are worked out directly.