shipapis
StarSubmit an APISubmit API

Callook.info vs Gladia

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

APICallook.infoHEALTHY94GladiaHEALTHY76
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms4371203
P95 · ms11564121
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified (data from public FCC ULS records)Unverified
Free tierFree — limits not publishedFree tier — API key may be required for production
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Callook.info vs Gladia: common questions

Which is more reliable, Callook.info or Gladia?

Both are neck-and-neck — Callook.info and Gladia 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, Callook.info or Gladia?

Callook.info has the lower median latency in our checks — Callook.info responds in 437 ms versus Gladia at 1203 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 Callook.info and Gladia need an API key?

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

Can I call Callook.info and Gladia from the browser?

Yes — both Callook.info and Gladia 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 Callook.info and Gladia free for commercial use?

Callook.info has unclear commercial terms, and Gladia 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.