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LibreTranslate vs Zube

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

APILibreTranslateNEW—ZubeNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified (software is AGPL-3.0)Unverified
Free tierFree — /languages is keyless; hosted /translate may require a key or donationFree tier — API key required
Rate limitUnpublished (per hosted instance)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

LibreTranslate vs Zube: common questions

Which is more reliable, LibreTranslate or Zube?

On our scheduled checks, Zube leads on measured uptime — LibreTranslate at —% versus Zube 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 LibreTranslate and Zube need an API key?

LibreTranslate needs no key, while Zube requires a free API key. If you want to start calling without signup, reach for LibreTranslate first.

Can I call LibreTranslate and Zube from the browser?

Only LibreTranslate is browser-friendly — it returns CORS headers over HTTPS. Zube needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are LibreTranslate and Zube free for commercial use?

LibreTranslate has unclear commercial terms, and Zube 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.