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LibreTranslate vs Numverify

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

APILibreTranslateHEALTHY92NumverifyHEALTHY93
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms619449
P95 · ms14741488
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 — key may be required
Rate limitUnpublished (per hosted instance)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

LibreTranslate vs Numverify: common questions

Which is more reliable, LibreTranslate or Numverify?

Both are neck-and-neck — LibreTranslate and Numverify each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, LibreTranslate or Numverify?

Numverify has the lower median latency in our checks — LibreTranslate responds in 619 ms versus Numverify at 449 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 LibreTranslate and Numverify need an API key?

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

Can I call LibreTranslate and Numverify from the browser?

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

Are LibreTranslate and Numverify free for commercial use?

LibreTranslate has unclear commercial terms, and Numverify 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.