Affirm vs Klarna

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

Klarna (rank #257) holds a modest lead over Affirm (rank #485) on the overall Smoower ecosystem score (47 vs 38). 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), Klarna is ahead of Affirm. On community (issue response, PR reviews and discussion health), Affirm is slightly ahead of Klarna. On reach (how visible the ecosystem is beyond its own repos), Klarna is clearly ahead of Affirm. On momentum (release cadence and how fast the ecosystem moves), Affirm is slightly ahead of Klarna.

Affirm carries 207 GitHub stars across 116 public repos, with 9 repositories active in the last 90 days and 4 external contributors on record. Klarna shows 2,965 stars across 139 public repos, 8 active in the last 90 days and 2 external contributors. The star gap on its own does not decide the comparison, but Klarna's footprint is roughly 14.3x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Affirm is the stronger read for anyone weighting community. Klarna looks better where reach 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.