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Currencylayer vs Exchangerate.dev

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

APICurrencylayerNEW—Exchangerate.devNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree — limits not published
Rate limitUnpublished12 req/window · 11 remaining · resets 1783515720
In directory since2026-07-052026-07-05
operationalpartialdownno data

Currencylayer vs Exchangerate.dev: common questions

Which is more reliable, Currencylayer or Exchangerate.dev?

On our scheduled checks, Exchangerate.dev leads on measured uptime — Currencylayer at —% versus Exchangerate.dev at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

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?

Neither sends browser-friendly CORS headers reliably, so call Currencylayer and Exchangerate.dev from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

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.