shipapis
StarSubmit an APISubmit API

Free Public APIs API vs Quandl

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

APIFree Public APIs APIHEALTHY88QuandlHEALTHY88
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms878823
P95 · ms24193525
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Free Public APIs API vs Quandl: common questions

Which is more reliable, Free Public APIs API or Quandl?

Both are neck-and-neck — Free Public APIs API 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, Free Public APIs API or Quandl?

Quandl has the lower median latency in our checks — Free Public APIs API responds in 878 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 Free Public APIs API and Quandl need an API key?

Neither needs a paid key — Free Public APIs API 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 Free Public APIs API and Quandl from the browser?

Only Free Public APIs API 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 Free Public APIs API and Quandl free for commercial use?

Free Public APIs API 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.