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Userstack vs WebScraping.AI

Same instrument, two spec sheets — measured, not claimed.

APIUserstackNEW—WebScraping.AINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

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 —% versus WebScraping.AI at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

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.