Userstack vs WebScraping.AI
Same instrument, two spec sheets — measured, not claimed.
Userstack vs WebScraping.AI: common questions
Which is more reliable, Userstack or WebScraping.AI?
On our scheduled checks, WebScraping.AI leads on measured uptime — Userstack at 99.02% versus WebScraping.AI 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, Userstack or WebScraping.AI?
Userstack has the lower median latency in our checks — Userstack responds in 443 ms versus WebScraping.AI at 460 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 Userstack and WebScraping.AI need an API key?
Both ask you to authenticate — Userstack uses an API key and WebScraping.AI 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 Userstack and WebScraping.AI from the browser?
Only Userstack is browser-friendly — it returns CORS headers over HTTPS. WebScraping.AI needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Userstack and WebScraping.AI free for commercial use?
Userstack has unclear commercial terms, and WebScraping.AI 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.