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Public Time API vs Telnyx API

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

APIPublic Time APINEW—Telnyx APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublished50, 50;w=1 req/window · 49 remaining · resets 1
In directory since2026-07-052026-07-05
operationalpartialdownno data

Public Time API vs Telnyx API: common questions

Which is more reliable, Public Time API or Telnyx API?

On our scheduled checks, Telnyx API leads on measured uptime — Public Time API at —% versus Telnyx 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 Public Time API and Telnyx API need an API key?

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

Can I call Public Time API and Telnyx API from the browser?

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

Are Public Time API and Telnyx API free for commercial use?

Public Time API has unclear commercial terms, and Telnyx 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.