City, Berlin vs ONS
Same instrument, two spec sheets — measured, not claimed.
City, Berlin vs ONS: common questions
Which is more reliable, City, Berlin or ONS?
On our scheduled checks, ONS leads on measured uptime — City, Berlin at 99.02% versus ONS at 100% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, City, Berlin or ONS?
ONS has the lower median latency in our checks — City, Berlin responds in 861 ms versus ONS at 732 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.
Do City, Berlin and ONS need an API key?
Neither needs a paid key — City, Berlin is callable with no signup, and ONS is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call City, Berlin and ONS from the browser?
Only ONS is browser-friendly — it returns CORS headers over HTTPS. City, Berlin needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are City, Berlin and ONS free for commercial use?
City, Berlin has unclear commercial terms, and ONS 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.