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Keen IO vs TLE

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

APIKeen IONEW—TLENEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Keen IO vs TLE: common questions

Which is more reliable, Keen IO or TLE?

On our scheduled checks, TLE leads on measured uptime — Keen IO at —% versus TLE 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 Keen IO and TLE need an API key?

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

Can I call Keen IO and TLE from the browser?

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

Are Keen IO and TLE free for commercial use?

Keen IO has unclear commercial terms, and TLE 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.