Numverify vs Shotstack
Same instrument, two spec sheets — measured, not claimed.
Numverify vs Shotstack: common questions
Which is more reliable, Numverify or Shotstack?
Both are neck-and-neck — Numverify and Shotstack 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, Numverify or Shotstack?
Numverify has the lower median latency in our checks — Numverify responds in 449 ms versus Shotstack at 1167 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 Numverify and Shotstack need an API key?
Both ask you to authenticate — Numverify uses an API key and Shotstack uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.
Can I call Numverify and Shotstack from the browser?
Only Shotstack 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 Numverify and Shotstack free for commercial use?
Numverify has unclear commercial terms, and Shotstack 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.