BriefTape vs Currencylayer

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

Uptime · 30d
Uptime · 90d99.02%100%
Uptime · 30d98.3%100%
P50 · ms1021511
P95 · ms4409967
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — key may be required
Rate limit10000 req/window · 9381 remaining · resets 1783555200Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

BriefTape vs Currencylayer: common questions

Which is more reliable, BriefTape or Currencylayer?

On our scheduled checks, Currencylayer leads on measured uptime — BriefTape at 99.02% versus Currencylayer at 100% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, BriefTape or Currencylayer?

Currencylayer has the lower median latency in our checks — BriefTape responds in 1021 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 BriefTape and Currencylayer need an API key?

Both ask you to authenticate — BriefTape 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 BriefTape and Currencylayer from the browser?

Only BriefTape 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 BriefTape and Currencylayer free for commercial use?

BriefTape 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.