REST Countries vs ValidEU API
Same instrument, two spec sheets — measured, not claimed.
REST Countries vs ValidEU API: common questions
Which is more reliable, REST Countries or ValidEU API?
Both are neck-and-neck — REST Countries and ValidEU API 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, REST Countries or ValidEU API?
ValidEU API has the lower median latency in our checks — REST Countries responds in 328 ms versus ValidEU API at 273 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 REST Countries and ValidEU API need an API key?
REST Countries needs no key, while ValidEU API requires a free API key. If you want to start calling without signup, reach for REST Countries first.
Can I call REST Countries and ValidEU API from the browser?
Neither sends browser-friendly CORS headers reliably, so call REST Countries and ValidEU API from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.
Are REST Countries and ValidEU API free for commercial use?
REST Countries allows commercial use on its free tier, and ValidEU API 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.