Affirm vs Klaviyo

Affirm and Klaviyo both appear on the Smoower Developer Ecosystem Index.

Klaviyo (rank #237) holds a modest lead over Affirm (rank #485) on the overall Smoower ecosystem score (48 vs 38). The gap of 10 points reflects composite signals across code, docs, community and reach.

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

Affirm carries 207 GitHub stars across 116 public repos, with 9 repositories active in the last 90 days and 4 external contributors on record. Klaviyo shows 573 stars across 117 public repos, 23 active in the last 90 days and 17 external contributors.

Affirm is the stronger read for anyone weighting education. Klaviyo 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.