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BuyWhere vs CustomGPT.ai

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

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

BuyWhere vs CustomGPT.ai: common questions

Which is more reliable, BuyWhere or CustomGPT.ai?

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

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

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

Are BuyWhere and CustomGPT.ai free for commercial use?

BuyWhere has unclear commercial terms, and CustomGPT.ai 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.