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Personality.fyi vs Random Useless Facts

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

APIPersonality.fyiNEW—Random Useless FactsNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — no authFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Personality.fyi vs Random Useless Facts: common questions

Which is more reliable, Personality.fyi or Random Useless Facts?

On our scheduled checks, Random Useless Facts leads on measured uptime — Personality.fyi at —% versus Random Useless Facts 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 Personality.fyi and Random Useless Facts need an API key?

Neither needs a paid key — Personality.fyi is callable with no signup, and Random Useless Facts is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Personality.fyi and Random Useless Facts from the browser?

Yes — both Personality.fyi and Random Useless Facts 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 Personality.fyi and Random Useless Facts free for commercial use?

Personality.fyi has unclear commercial terms, and Random Useless Facts 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.