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CustomGPT.ai vs Micro User Service

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

APICustomGPT.aiNEW—Micro User ServiceNEW—
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 — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CustomGPT.ai vs Micro User Service: common questions

Which is more reliable, CustomGPT.ai or Micro User Service?

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

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

Yes — both CustomGPT.ai and Micro User Service 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 Micro User Service free for commercial use?

CustomGPT.ai has unclear commercial terms, and Micro User Service 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.