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CustomGPT.ai vs WhatIsMyIP API

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

APICustomGPT.aiNEW—WhatIsMyIP APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CustomGPT.ai vs WhatIsMyIP API: common questions

Which is more reliable, CustomGPT.ai or WhatIsMyIP API?

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

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

Can I call CustomGPT.ai and WhatIsMyIP API from the browser?

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

CustomGPT.ai has unclear commercial terms, and WhatIsMyIP 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.