Cat Facts vs RandomDuck
Same instrument, two spec sheets — measured, not claimed.
Cat Facts vs RandomDuck: common questions
Which is more reliable, Cat Facts or RandomDuck?
On our scheduled checks, RandomDuck leads on measured uptime — Cat Facts at 99.02% versus RandomDuck at 100% 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, Cat Facts or RandomDuck?
Cat Facts has the lower median latency in our checks — Cat Facts responds in 259 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 Cat Facts and RandomDuck need an API key?
Neither needs a paid key — Cat Facts 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 Cat Facts and RandomDuck from the browser?
Only Cat Facts 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 Cat Facts and RandomDuck free for commercial use?
Cat Facts has unclear commercial terms, 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.