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bitpay API vs ExchangeRate-API (open)

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

APIbitpay APIHEALTHY93ExchangeRate-API (open)HEALTHY98
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms489221
P95 · ms22441091
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key may be required for productionFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

bitpay API vs ExchangeRate-API (open): common questions

Which is more reliable, bitpay API or ExchangeRate-API (open)?

Both are neck-and-neck — bitpay API and ExchangeRate-API (open) 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, bitpay API or ExchangeRate-API (open)?

ExchangeRate-API (open) has the lower median latency in our checks — bitpay API responds in 489 ms versus ExchangeRate-API (open) at 221 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 bitpay API and ExchangeRate-API (open) need an API key?

ExchangeRate-API (open) needs no key, while bitpay API requires a free API key. If you want to start calling without signup, reach for ExchangeRate-API (open) first.

Can I call bitpay API and ExchangeRate-API (open) from the browser?

Yes — both bitpay API and ExchangeRate-API (open) 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 bitpay API and ExchangeRate-API (open) free for commercial use?

bitpay API has unclear commercial terms, and ExchangeRate-API (open) 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.