Open WebUI

Good for / not for

What it actually does

Open WebUI is a front end, not a runner. It gives you the ChatGPT layout — conversations, accounts, a model picker — as a web app you host yourself, pointed at whichever models you supply, local or cloud. Multi-user support, RAG over your own documents and SSO are what make it the choice for a team rather than for one person. The software is free to use as-is for everyone, with no seat cap on functionality, and an Enterprise License is quoted only when you want to white-label it or need enterprise-exclusive features. The licence is the part to read before you deploy. On 19 April 2025 the project moved from plain BSD-3 to a custom Open WebUI License: still BSD-3 at the base, with a mandatory branding-protection clause added. Removing the branding requires an enterprise licence once you are above 50 end users in any rolling 30 days. Contributions made up to v0.6.5 remain under the original BSD-3. The change drew documented backlash and fork discussion at the time. Operationally it asks something of you too: reviewers report Docker volume corruption when containers terminate, WebSocket drops, and occasional breaking config changes between minor versions.

Pricing and free-plan limits

Free tier: No functional or user cap while the original branding is intact. Removing the branding above 50 end users in any rolling 30 days is what needs an enterprise licence.

Three honest limitations

1. Operational fragility is the recurring complaint: Docker volume corruption when a container terminates, WebSocket drops, and occasional breaking config changes between minor versions.
2. One instance handles about 50 active users comfortably, or 100 with light usage, before it needs horizontal scaling.
3. The licence changed on 19 April 2025 from plain BSD-3 to a custom Open WebUI License — BSD-3 at the base, with a mandatory branding-protection clause added. Removing the branding above 50 end users in any rolling 30 days requires an enterprise licence. Contributions up to v0.6.5 remain under the original BSD-3. The change drew documented backlash and fork discussion.

Alternatives

• AnythingLLM — Choose AnythingLLM instead if the job is document chat for one person or a small team and you would rather not run a multi-user service.
• Jan — Choose Jan instead if one person needs a local chat app on their own desktop rather than a shared web service.
• Ollama — Choose Ollama instead if what you are missing is the model runner itself — Open WebUI is the interface on top, not the engine.

Getting started in 5 minutes

1. Have a model ready first. Open WebUI is the interface; the model comes from a runner you host or from a cloud provider whose key you supply.
2. Deploy with Docker, and treat the volume as real data — reviewers report corruption when containers terminate.
3. Read the licence at docs.openwebui.com/license before you deploy anything rebranded. Above 50 end users in any rolling 30 days, removing the branding needs an enterprise licence.
4. Turn on the multi-user pieces you actually need. Accounts, RAG and SSO are the reason to pick this over a desktop app.
5. Plan a second instance past roughly 50 active users, rather than a bigger one.

Open WebUI questions

Is Open WebUI free?

Yes — free to use as-is for everyone, with no seat cap on functionality, as long as the standard branding stays in place. The Enterprise License is quoted rather than listed, and is required only for white-labelling or enterprise-exclusive features. There is no pricing page: openwebui.com/pricing returns a 404, and the terms live on the enterprise page in the docs.

Is Open WebUI still open source?

Not in the plain sense it once was. On 19 April 2025 the project moved from BSD-3 to a custom Open WebUI License — still BSD-3-based, with a mandatory branding-protection clause added. Contributions up to v0.6.5 remain under the original BSD-3. The change drew documented backlash and fork discussion.

When do I actually need an enterprise licence?

When you want the branding removed or replaced and you are above 50 end users in any rolling 30 days, or when you need enterprise-exclusive features. Below that threshold, and with the branding intact, the software is free with no user cap on what it does. The 50 is a condition on rebranding, not a cap on users.

How many people can one instance serve?

A self-hosted review puts it at about 50 active users comfortably, or 100 with light usage, before you need to scale horizontally. Past that, run more instances rather than a bigger one.

Open WebUI or AnythingLLM?

Both are self-hosted and both do RAG over your own documents. Open WebUI is the multi-user ChatGPT clone with SSO, and its licence now carries the branding clause. AnythingLLM is MIT, is aimed at private document chat, and sells a managed cloud from $50 a month if you would rather not host anything.

Sources

• Open WebUI enterprise page (free to use as-is; enterprise licence for white-labelling; openwebui.com/pricing 404s)
• Open WebUI License, the official terms: BSD-3 base plus the mandatory branding-protection clause, in force since 2025-04-19
• Documented backlash to the 2025 licence change
• Self-hosted review (Docker volume corruption, WebSocket drops, breaking config changes; about 50 active users per instance)
• GitHub repository (151,151 stars, last push 2026-09-06, v0.11.3 on 2026-08-31)