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Kroki vs What The Commit

Same instrument, two spec sheets — measured, not claimed.

APIKrokiHEALTHY92What The CommitHEALTHY79
Uptime · 30d
Uptime · 90d100%99.02%
Uptime · 30d100%98.3%
P50 · ms6331312
P95 · ms31834279
Authnonenone
CORSyesyes
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Kroki vs What The Commit: common questions

Which is more reliable, Kroki or What The Commit?

On our scheduled checks, Kroki leads on measured uptime — Kroki at 100% versus What The Commit at 99.02% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Kroki or What The Commit?

Kroki has the lower median latency in our checks — Kroki responds in 633 ms versus What The Commit at 1312 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Kroki and What The Commit need an API key?

Neither needs a paid key — Kroki is callable with no signup, and What The Commit is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Kroki and What The Commit from the browser?

Only Kroki is browser-friendly — it returns CORS headers over HTTPS. What The Commit needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Kroki and What The Commit free for commercial use?

Kroki has unclear commercial terms, and What The Commit has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.