Dog CEO vs RandomDuck

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

Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms245459
P95 · ms4288836
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licenseStanford Dogs datasetUnverified
Free tierUnlimitedFree — limits not published
Rate limitNone publishedUnpublished
In directory since2026-05-022026-07-05
operationalpartialdownno data

Dog CEO vs RandomDuck: common questions

Which is more reliable, Dog CEO or RandomDuck?

Both are neck-and-neck — Dog CEO and RandomDuck each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Dog CEO or RandomDuck?

Dog CEO has the lower median latency in our checks — Dog CEO responds in 245 ms versus RandomDuck at 459 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 Dog CEO and RandomDuck need an API key?

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

Can I call Dog CEO and RandomDuck 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 Dog CEO and RandomDuck free for commercial use?

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