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Open Trivia vs Personality.fyi

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

APIOpen TriviaNEW—Personality.fyiNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licenseCC BY-SA 4.0Unverified
Free tierFree, no API keyFree — no auth
Rate limitOne request per IP every 5 seconds (documented)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Open Trivia vs Personality.fyi: common questions

Which is more reliable, Open Trivia or Personality.fyi?

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

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

Can I call Open Trivia and Personality.fyi from the browser?

Yes — both Open Trivia and Personality.fyi 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 Open Trivia and Personality.fyi free for commercial use?

Open Trivia allows commercial use on its free tier, and Personality.fyi 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.