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Dog CEO vs Open Dog Registry

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

APIDog CEOHEALTHY—Open Dog RegistryNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licenseStanford Dogs datasetUnverified
Free tierUnlimitedFree tier — API key required
Rate limitNone publishedUnpublished
In directory since2026-05-022026-07-05
operationalpartialdownno data

Dog CEO vs Open Dog Registry: common questions

Which is more reliable, Dog CEO or Open Dog Registry?

On our scheduled checks, Open Dog Registry leads on measured uptime — Dog CEO at —% versus Open Dog Registry 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 Dog CEO and Open Dog Registry need an API key?

Dog CEO needs no key, while Open Dog Registry requires a free API key. If you want to start calling without signup, reach for Dog CEO first.

Can I call Dog CEO and Open Dog Registry from the browser?

Yes — both Dog CEO and Open Dog Registry send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Dog CEO and Open Dog Registry free for commercial use?

Dog CEO allows commercial use on its free tier, and Open Dog Registry 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.