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QuickChart vs SampleAPIs

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

APIQuickChartNEW—SampleAPIsNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublished5000 req/window · 3876 remaining · resets 1783516346
In directory since2026-07-052026-07-05
operationalpartialdownno data

QuickChart vs SampleAPIs: common questions

Which is more reliable, QuickChart or SampleAPIs?

On our scheduled checks, SampleAPIs leads on measured uptime — QuickChart at —% versus SampleAPIs 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 QuickChart and SampleAPIs need an API key?

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

Can I call QuickChart and SampleAPIs from the browser?

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

Are QuickChart and SampleAPIs free for commercial use?

QuickChart has unclear commercial terms, and SampleAPIs 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.