Currencylayer vs Exchangerate.dev
Same instrument, two spec sheets — measured, not claimed.
Currencylayer vs Exchangerate.dev: common questions
Which is more reliable, Currencylayer or Exchangerate.dev?
On our scheduled checks, Currencylayer leads on measured uptime — Currencylayer at 100% versus Exchangerate.dev at 71.6% 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, Currencylayer or Exchangerate.dev?
Exchangerate.dev has the lower median latency in our checks — Currencylayer responds in 511 ms versus Exchangerate.dev at 336 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 Currencylayer and Exchangerate.dev need an API key?
Exchangerate.dev needs no key, while Currencylayer requires a free API key. If you want to start calling without signup, reach for Exchangerate.dev first.
Can I call Currencylayer and Exchangerate.dev from the browser?
Only Exchangerate.dev is browser-friendly — it returns CORS headers over HTTPS. Currencylayer needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Currencylayer and Exchangerate.dev free for commercial use?
Currencylayer has unclear commercial terms, and Exchangerate.dev 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.