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CarsXE vs SBB Open Data

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

APICarsXENEW—SBB Open DataNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublished6000 req/window · 5999 remaining · resets 2026-07-09 00:00:00+00:00
In directory since2026-07-052026-07-05
operationalpartialdownno data

CarsXE vs SBB Open Data: common questions

Which is more reliable, CarsXE or SBB Open Data?

On our scheduled checks, SBB Open Data leads on measured uptime — CarsXE at —% versus SBB Open Data 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 CarsXE and SBB Open Data need an API key?

SBB Open Data needs no key, while CarsXE requires a free API key. If you want to start calling without signup, reach for SBB Open Data first.

Can I call CarsXE and SBB Open Data from the browser?

Neither sends browser-friendly CORS headers reliably, so call CarsXE and SBB Open Data from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are CarsXE and SBB Open Data free for commercial use?

CarsXE has unclear commercial terms, and SBB Open Data 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.