Keyvalue vs VATlayer
Same instrument, two spec sheets — measured, not claimed.
Keyvalue vs VATlayer: common questions
Which is more reliable, Keyvalue or VATlayer?
On our scheduled checks, VATlayer leads on measured uptime — Keyvalue at 86.3% versus VATlayer 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, Keyvalue or VATlayer?
VATlayer has the lower median latency in our checks — Keyvalue responds in 855 ms versus VATlayer at 473 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 Keyvalue and VATlayer need an API key?
Keyvalue needs no key, while VATlayer requires a free API key. If you want to start calling without signup, reach for Keyvalue first.
Can I call Keyvalue and VATlayer from the browser?
Only Keyvalue is browser-friendly — it returns CORS headers over HTTPS. VATlayer needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Keyvalue and VATlayer free for commercial use?
Keyvalue has unclear commercial terms, and VATlayer 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.