big-AGI vs 
Kotaemon
big-AGI vs Kotaemon compared for 2026 — features, license, ease of use, performance and which one to choose. Pro-grade chat for many models vs Clean open UI to chat with documents.
Updated regularly · curated by OpenSourceAI.tech
big-AGI vs Kotaemon at a glance
| Spec | big-AGI | Kotaemon |
|---|---|---|
| Category | Self-hosted chat UI | Self-hosted chat UI |
| Type | Self-hosted AI chat UI | RAG chat UI |
| License | MIT | Apache-2.0 |
| Runs locally | Self-hosted | Self-hosted |
| Primary language | TypeScript | Python |
| Ease of use | Beginner | Beginner |
| Best for | a powerful multi-provider chat UI | teams wanting a ready-made document QA UI |
| GitHub stars | 7.1k | 25.7k |
How big-AGI and Kotaemon score
| Criterion | big-AGI | Kotaemon |
|---|---|---|
| Popularity | 2.5 | 3.5 |
| Maintenance | 5.0 | 5.0 |
| Ease of use | 5.0 | 5.0 |
| Privacy | 4.5 | 4.5 |
| License freedom | 5.0 | 5.0 |
Scores are computed automatically from public signals — GitHub stars (popularity), recent commit activity (maintenance), license type (freedom), local-first design (privacy) and onboarding complexity (ease of use). Indicative, not a verdict.
What each one is
big-AGI
big-AGI is a feature-rich, self-hostable AI suite with a polished chat UI, supporting many providers, personas, multi-model beam and advanced tools.
- Supports dozens of model providers
- Personas, beam and advanced tooling
- Polished, fast interface
Kotaemon
Kotaemon is a clean, open-source RAG interface for chatting with your documents, with citations, multi-user support and a customizable pipeline for developers.
- Answers with inline citations and previews
- Both end-user UI and developer framework
- Gradio-based, easy to theme and extend
Key differences
big-AGI is self-hosted AI chat UI, while Kotaemon is rAG chat UI. Their licenses differ (MIT vs Apache-2.0), which matters if you ship a commercial product. In short, big-AGI fits a powerful multi-provider chat UI, and Kotaemon fits teams wanting a ready-made document QA UI.
Which should you choose?
Choose big-AGI for a powerful multi-provider chat UI. Choose Kotaemon for teams wanting a ready-made document QA UI.
There is rarely one winner — many setups use both. The right pick depends on your hardware, your team's skills, and whether you value simplicity or control.
Frequently asked questions
Is big-AGI or Kotaemon easier to use?
Both sit at a similar level (Beginner). Your choice should come down to fit rather than difficulty.
Are big-AGI and Kotaemon free?
big-AGI is free and open source (MIT), and Kotaemon is free and open source (Apache-2.0). Neither charges for the core software.
Can I run big-AGI and Kotaemon locally?
big-AGI: self-hosted · Kotaemon: self-hosted. Both can be used without sending your data to a third-party cloud where their setup allows.
big-AGI vs Kotaemon — which should I pick in 2026?
Choose big-AGI for a powerful multi-provider chat UI. Choose Kotaemon for teams wanting a ready-made document QA UI.
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