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RandomDuck vs Dog CEO

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

APIRandomDuckNEW—Dog CEOHEALTHY—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedStanford Dogs dataset
Free tierFree — limits not publishedUnlimited
Rate limitUnpublishedNone published
In directory since2026-07-052026-05-02
operationalpartialdownno data

RandomDuck vs Dog CEO: common questions

Which is more reliable, RandomDuck or Dog CEO?

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

Neither needs a paid key — RandomDuck is callable with no signup, and Dog CEO is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call RandomDuck and Dog CEO from the browser?

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

Are RandomDuck and Dog CEO free for commercial use?

RandomDuck has unclear commercial terms, and Dog CEO allows commercial use on its free tier. 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.