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City, Helsinki vs Gazette Data, UK

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

APICity, HelsinkiNEW—Gazette Data, UKNEW—
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 limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

City, Helsinki vs Gazette Data, UK: common questions

Which is more reliable, City, Helsinki or Gazette Data, UK?

On our scheduled checks, Gazette Data, UK leads on measured uptime — City, Helsinki at —% versus Gazette Data, UK 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 City, Helsinki and Gazette Data, UK need an API key?

City, Helsinki needs no key, while Gazette Data, UK requires a free API key. If you want to start calling without signup, reach for City, Helsinki first.

Can I call City, Helsinki and Gazette Data, UK from the browser?

Only Gazette Data, UK is browser-friendly — it returns CORS headers over HTTPS. City, Helsinki needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are City, Helsinki and Gazette Data, UK free for commercial use?

City, Helsinki has unclear commercial terms, and Gazette Data, UK 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.