Open WebUI vs LlamaIndex

Open WebUI (On a mission to build the best AI user interface.) and LlamaIndex both appear on the Smoower Developer Ecosystem Index.

LlamaIndex (rank #63) holds a modest lead over Open WebUI (rank #189) on the overall Smoower ecosystem score (59 vs 50). The gap of 9 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), LlamaIndex is slightly ahead of Open WebUI. On education (docs, guides and learning material for developers), Open WebUI is ahead of LlamaIndex. On community (issue response, PR reviews and discussion health), Open WebUI is slightly ahead of LlamaIndex. On reach (how visible the ecosystem is beyond its own repos), LlamaIndex is ahead of Open WebUI. On momentum (release cadence and how fast the ecosystem moves), LlamaIndex is clearly ahead of Open WebUI.

Open WebUI carries 159,650 GitHub stars across 25 public repos, with 12 repositories active in the last 90 days and 198 external contributors on record. LlamaIndex shows 99,809 stars across 135 public repos, 48 active in the last 90 days and 241 external contributors.

Open WebUI is the stronger read for anyone weighting education. LlamaIndex looks better where momentum is the deciding factor. The table below breaks the scores down pillar by pillar; the linked profiles cover the underlying repos, docs and community signals in full.