ArgentinaDatos vs Open Library

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

Uptime · 30d
Uptime · 90d100%88.2%
Uptime · 30d100%81.7%
P50 · ms921629
P95 · ms7584878
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedMixed — mostly open
Free tierFree — limits not publishedUnlimited within courtesy limits
Rate limitUnpublishedSoft — identified UA appreciated
In directory since2026-07-052026-05-02
operationalpartialdownno data

ArgentinaDatos vs Open Library: common questions

Which is more reliable, ArgentinaDatos or Open Library?

On our scheduled checks, ArgentinaDatos leads on measured uptime — ArgentinaDatos at 100% versus Open Library at 88.2% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, ArgentinaDatos or Open Library?

ArgentinaDatos has the lower median latency in our checks — ArgentinaDatos responds in 92 ms versus Open Library at 1629 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do ArgentinaDatos and Open Library need an API key?

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

Can I call ArgentinaDatos and Open Library from the browser?

Yes — both ArgentinaDatos and Open Library 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 ArgentinaDatos and Open Library free for commercial use?

ArgentinaDatos has unclear commercial terms, and Open Library 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.