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Currencylayer vs Exchangerate.host

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

APICurrencylayerNEW—Exchangerate.hostNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Currencylayer vs Exchangerate.host: common questions

Which is more reliable, Currencylayer or Exchangerate.host?

On our scheduled checks, Exchangerate.host leads on measured uptime — Currencylayer at —% versus Exchangerate.host 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.host need an API key?

Exchangerate.host needs no key, while Currencylayer requires a free API key. If you want to start calling without signup, reach for Exchangerate.host first.

Can I call Currencylayer and Exchangerate.host from the browser?

Only Exchangerate.host 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.host free for commercial use?

Currencylayer has unclear commercial terms, and Exchangerate.host 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.