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FakerAPI vs SLA Uptime Calculator

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

APIFakerAPIDEAD0SLA Uptime CalculatorHEALTHY82
Uptime · 30d
Uptime · 90d1.0%100%
Uptime · 30d0.0%100%
P50 · ms8601373
P95 · ms8602741
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — no keyFree — limits not published
Rate limit60 req/window · 59 remainingUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

FakerAPI vs SLA Uptime Calculator: common questions

Which is more reliable, FakerAPI or SLA Uptime Calculator?

On our scheduled checks, SLA Uptime Calculator leads on measured uptime — FakerAPI at 1.0% versus SLA Uptime Calculator at 100% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, FakerAPI or SLA Uptime Calculator?

FakerAPI has the lower median latency in our checks — FakerAPI responds in 860 ms versus SLA Uptime Calculator at 1373 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 FakerAPI and SLA Uptime Calculator need an API key?

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

Can I call FakerAPI and SLA Uptime Calculator from the browser?

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

Are FakerAPI and SLA Uptime Calculator free for commercial use?

FakerAPI has unclear commercial terms, and SLA Uptime Calculator 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.