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Apimetro vs AZ511

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

APIApimetroNEW—AZ511NEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — no keyFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Apimetro vs AZ511: common questions

Which is more reliable, Apimetro or AZ511?

On our scheduled checks, AZ511 leads on measured uptime — Apimetro at —% versus AZ511 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 Apimetro and AZ511 need an API key?

Apimetro needs no key, while AZ511 requires a free API key. If you want to start calling without signup, reach for Apimetro first.

Can I call Apimetro and AZ511 from the browser?

Only Apimetro is browser-friendly — it returns CORS headers over HTTPS. AZ511 needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Apimetro and AZ511 free for commercial use?

Apimetro has unclear commercial terms, and AZ511 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.