Which is more popular, Onyx or Open WebUI?

Open WebUI has more GitHub stars (153,800 vs 32,316).

Which is more actively developed, Onyx or Open WebUI?

Onyx had more commits in the last 90 days (1,557 vs 1,515).

Compare their capabilities, limitations and "best for" notes above. Trying each on a small task is the fastest way to decide.

Side-by-side comparison of two AI agent tools

Open WebUI is growing faster: +3,942 GitHub stars in the last 30 days vs +240 for Onyx.
Pick Onyx for: open Source AI Platform - AI Chat with advanced features that works with every LLM. Pick Open WebUI for: user-friendly AI Interface (Supports Ollama, OpenAI API, ...).

From GitHub data refreshed daily.

Onyxopen-source

Open Source AI Platform - AI Chat with advanced features that works with every LLM

User-friendly AI Interface (Supports Ollama, OpenAI API, ...)

+Multi-provider AI integration supporting both local Ollama models and remote OpenAI-compatible APIs in a single interface
+Self-hosted deployment with complete offline capability ensuring data privacy and security control
+Enterprise-grade user management with granular permissions, user groups, and admin controls for organizational deployment

-Requires technical expertise for initial setup and maintenance of Docker/Kubernetes infrastructure
-Self-hosting demands dedicated server resources and ongoing system administration
-Limited to local deployment model, lacking the convenience of managed cloud AI services

•Enterprise organizations deploying private AI assistants with strict data governance and user access controls
•Development teams building local AI workflows with multiple model providers while maintaining code and data privacy
•Educational institutions providing students and faculty with controlled AI access without external data sharing

Which is more popular, Onyx or Open WebUI?: Open WebUI has more GitHub stars (153,800 vs 32,316).
Which is more actively developed, Onyx or Open WebUI?: Onyx had more commits in the last 90 days (1,557 vs 1,515).
Should I use Onyx or Open WebUI?: Compare their capabilities, limitations and "best for" notes above. Trying each on a small task is the fastest way to decide.