Datamuse vs REST Countries
Same instrument, two spec sheets — measured, not claimed.
Datamuse vs REST Countries: common questions
Which is more reliable, Datamuse or REST Countries?
On our scheduled checks, REST Countries leads on measured uptime — Datamuse at 37.1% versus REST Countries 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, Datamuse or REST Countries?
Datamuse has the lower median latency in our checks — Datamuse responds in 160 ms versus REST Countries at 274 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 Datamuse and REST Countries need an API key?
Neither needs a paid key — Datamuse is callable with no signup, and REST Countries is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Datamuse and REST Countries from the browser?
Only REST Countries is browser-friendly — it returns CORS headers over HTTPS. Datamuse needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Datamuse and REST Countries free for commercial use?
Datamuse has unclear commercial terms, and REST Countries 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.