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CustomGPT.ai vs Gladia

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

APICustomGPT.aiNEW—GladiaNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — API key may be required for production
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CustomGPT.ai vs Gladia: common questions

Which is more reliable, CustomGPT.ai or Gladia?

On our scheduled checks, Gladia leads on measured uptime — CustomGPT.ai at —% versus Gladia 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 CustomGPT.ai and Gladia need an API key?

Both ask you to authenticate — CustomGPT.ai uses an API key and Gladia 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 CustomGPT.ai and Gladia from the browser?

Yes — both CustomGPT.ai 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 CustomGPT.ai and Gladia free for commercial use?

CustomGPT.ai 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.