shipapis
StarSubmit an APISubmit API

Callook.info vs Quandl

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

APICallook.infoHEALTHY94QuandlHEALTHY88
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms437823
P95 · ms11563525
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified (data from public FCC ULS records)Unverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Callook.info vs Quandl: common questions

Which is more reliable, Callook.info or Quandl?

Both are neck-and-neck — Callook.info and Quandl 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, Callook.info or Quandl?

Callook.info has the lower median latency in our checks — Callook.info responds in 437 ms versus Quandl at 823 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 Callook.info and Quandl need an API key?

Neither needs a paid key — Callook.info is callable with no signup, and Quandl is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Callook.info and Quandl from the browser?

Only Callook.info is browser-friendly — it returns CORS headers over HTTPS. Quandl needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Callook.info and Quandl free for commercial use?

Callook.info has unclear commercial terms, and Quandl 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.