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LibreTranslate vs Vercel API

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

APILibreTranslateNEW—Vercel APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesyes
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Rate limitUnpublished (per hosted instance)Unpublished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 Vercel API: common questions

Which is more reliable, LibreTranslate or Vercel API?

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

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

Can I call LibreTranslate and Vercel API from the browser?

Yes — both LibreTranslate and Vercel API send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are LibreTranslate and Vercel API free for commercial use?

LibreTranslate has unclear commercial terms, and Vercel API 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.