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Kroki vs Piloterr

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

APIKrokiNEW—PiloterrNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Kroki vs Piloterr: common questions

Which is more reliable, Kroki or Piloterr?

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

Do Kroki and Piloterr need an API key?

Kroki needs no key, while Piloterr requires a free API key. If you want to start calling without signup, reach for Kroki first.

Can I call Kroki and Piloterr from the browser?

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

Are Kroki and Piloterr free for commercial use?

Kroki has unclear commercial terms, and Piloterr 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.