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Open-Elevation API vs positionstack

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

APIOpen-Elevation APINEW—positionstackNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Open-Elevation API vs positionstack: common questions

Which is more reliable, Open-Elevation API or positionstack?

On our scheduled checks, positionstack leads on measured uptime — Open-Elevation API at —% versus positionstack 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 Open-Elevation API and positionstack need an API key?

Open-Elevation API needs no key, while positionstack requires a free API key. If you want to start calling without signup, reach for Open-Elevation API first.

Can I call Open-Elevation API and positionstack from the browser?

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

Are Open-Elevation API and positionstack free for commercial use?

Open-Elevation API has unclear commercial terms, and positionstack 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.