Chroma vs Runway

Chroma and Runway (Building AI to Simulate the World) both appear on the Smoower Developer Ecosystem Index.

Chroma (rank #209) holds a narrow lead over Runway (rank #317) on the overall Smoower ecosystem score (49 vs 44). The gap of 5 points reflects composite signals across code, docs, community and reach.

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

Chroma carries 30,602 GitHub stars across 29 public repos, with 6 repositories active in the last 90 days and 94 external contributors on record. Runway shows 2,435 stars across 61 public repos, 16 active in the last 90 days and 0 external contributors. The star gap on its own does not decide the comparison, but Chroma's footprint is roughly 12.6x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Chroma is the stronger read for anyone weighting community. Runway 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.