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Quandl vs xAI Grok API

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

APIQuandlNEW—xAI Grok APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Quandl vs xAI Grok API: common questions

Which is more reliable, Quandl or xAI Grok API?

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

Do Quandl and xAI Grok API need an API key?

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

Can I call Quandl and xAI Grok API from the browser?

Neither sends browser-friendly CORS headers reliably, so call Quandl and xAI Grok API from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Quandl and xAI Grok API free for commercial use?

Quandl has unclear commercial terms, and xAI Grok API 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.