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Banking API vs Currencylayer

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

APIBanking APIHEALTHY98CurrencylayerHEALTHY93
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms203511
P95 · ms1435967
AuthapiKeyapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Banking API vs Currencylayer: common questions

Which is more reliable, Banking API or Currencylayer?

Both are neck-and-neck — Banking API and Currencylayer 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, Banking API or Currencylayer?

Banking API has the lower median latency in our checks — Banking API responds in 203 ms versus Currencylayer at 511 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 Banking API and Currencylayer need an API key?

Both ask you to authenticate — Banking API uses an API key and Currencylayer uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call Banking API and Currencylayer from the browser?

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

Are Banking API and Currencylayer free for commercial use?

Banking API has unclear commercial terms, and Currencylayer 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.