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Exchangerate.host vs World Trading Data

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

APIExchangerate.hostHEALTHY93World Trading DataHEALTHY94
Uptime · 30d
Uptime · 90d99.02%99.02%
Uptime · 30d98.3%98.3%
P50 · ms398423
P95 · ms3637920
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key may be required for production
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Exchangerate.host vs World Trading Data: common questions

Which is more reliable, Exchangerate.host or World Trading Data?

Both are neck-and-neck — Exchangerate.host and World Trading Data each measure 99.02% 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, Exchangerate.host or World Trading Data?

Exchangerate.host has the lower median latency in our checks — Exchangerate.host responds in 398 ms versus World Trading Data at 423 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 Exchangerate.host and World Trading Data need an API key?

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

Can I call Exchangerate.host and World Trading Data from the browser?

Only Exchangerate.host is browser-friendly — it returns CORS headers over HTTPS. World Trading Data needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Exchangerate.host and World Trading Data free for commercial use?

Exchangerate.host has unclear commercial terms, and World Trading Data 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.