jsDelivr vs Numverify
Same instrument, two spec sheets — measured, not claimed.
jsDelivr vs Numverify: common questions
Which is more reliable, jsDelivr or Numverify?
Both are neck-and-neck — jsDelivr and Numverify each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.
Which is faster, jsDelivr or Numverify?
jsDelivr has the lower median latency in our checks — jsDelivr responds in 181 ms versus Numverify at 449 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 jsDelivr and Numverify need an API key?
jsDelivr needs no key, while Numverify requires a free API key. If you want to start calling without signup, reach for jsDelivr first.
Can I call jsDelivr and Numverify from the browser?
Only jsDelivr is browser-friendly — it returns CORS headers over HTTPS. Numverify needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are jsDelivr and Numverify free for commercial use?
jsDelivr has unclear commercial terms, and Numverify 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.