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Currencyapi vs Plaid API

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

APICurrencyapiNEW—Plaid APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Currencyapi vs Plaid API: common questions

Which is more reliable, Currencyapi or Plaid API?

On our scheduled checks, Plaid API leads on measured uptime — Currencyapi at —% versus Plaid API 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 Currencyapi and Plaid API need an API key?

Both ask you to authenticate — Currencyapi uses an API key and Plaid API 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 Currencyapi and Plaid API from the browser?

Yes — both Currencyapi and Plaid API send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Currencyapi and Plaid API free for commercial use?

Currencyapi has unclear commercial terms, and Plaid API 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.