Datamuse vs Universities List

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

Uptime · 30d
Uptime · 90d92.2%100%
Uptime · 30d86.7%100%
P50 · ms180510
P95 · ms9262076
Authnonenone
CORSnoyes
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Datamuse vs Universities List: common questions

Which is more reliable, Datamuse or Universities List?

On our scheduled checks, Universities List leads on measured uptime — Datamuse at 92.2% versus Universities List 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, Datamuse or Universities List?

Datamuse has the lower median latency in our checks — Datamuse responds in 180 ms versus Universities List at 510 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 Datamuse and Universities List need an API key?

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

Can I call Datamuse and Universities List from the browser?

Neither sends browser-friendly CORS headers reliably, so call Datamuse and Universities List from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Datamuse and Universities List free for commercial use?

Datamuse has unclear commercial terms, and Universities List 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.