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Gladia vs Quandl

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

APIGladiaHEALTHY76QuandlHEALTHY88
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms1203823
P95 · ms41213525
AuthapiKeynone
CORSyesno
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

Gladia vs Quandl: common questions

Which is more reliable, Gladia or Quandl?

Both are neck-and-neck — Gladia 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, Gladia or Quandl?

Quandl has the lower median latency in our checks — Gladia responds in 1203 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 Gladia and Quandl need an API key?

Quandl needs no key, while Gladia requires a free API key. If you want to start calling without signup, reach for Quandl first.

Can I call Gladia and Quandl from the browser?

Only Gladia 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 Gladia and Quandl free for commercial use?

Gladia 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.