AssemblyAI vs Open WebUI

AssemblyAI (Advanced Speech-to-Text) and Open WebUI (On a mission to build the best AI user interface.) both appear on the Smoower Developer Ecosystem Index.

Open WebUI (rank #190) holds a modest lead over AssemblyAI (rank #401) on the overall Smoower ecosystem score (50 vs 41). 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), Open WebUI is ahead of AssemblyAI. On education (docs, guides and learning material for developers), Open WebUI is ahead of AssemblyAI. On community (issue response, PR reviews and discussion health), Open WebUI is ahead of AssemblyAI. On reach (how visible the ecosystem is beyond its own repos), AssemblyAI is slightly ahead of Open WebUI. On momentum (release cadence and how fast the ecosystem moves), Open WebUI is clearly ahead of AssemblyAI.

AssemblyAI carries 1,025 GitHub stars across 67 public repos, with 8 repositories active in the last 90 days and 11 external contributors on record. Open WebUI shows 159,650 stars across 25 public repos, 12 active in the last 90 days and 198 external contributors. The star gap on its own does not decide the comparison, but Open WebUI's footprint is roughly 155.8x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

AssemblyAI is the stronger read for anyone weighting reach. Open WebUI 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.