Open Library vs Open Scholarships

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

Uptime · 30d
Uptime · 90d88.2%100%
Uptime · 30d81.7%100%
P50 · ms1629558
P95 · ms48781716
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseMixed — mostly openCC BY 4.0
Free tierUnlimited within courtesy limitsFree — no key (CC BY 4.0; attribution required)
Rate limitSoft — identified UA appreciatedUnpublished
In directory since2026-05-022026-07-05
operationalpartialdownno data

Open Library vs Open Scholarships: common questions

Which is more reliable, Open Library or Open Scholarships?

On our scheduled checks, Open Scholarships leads on measured uptime — Open Library at 88.2% versus Open Scholarships at 100% 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, Open Library or Open Scholarships?

Open Scholarships has the lower median latency in our checks — Open Library responds in 1629 ms versus Open Scholarships at 558 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 Open Library and Open Scholarships need an API key?

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

Can I call Open Library and Open Scholarships from the browser?

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

Open Library has unclear commercial terms, and Open Scholarships allows commercial use on its free tier. 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.