Datamuse vs Wikipedia REST

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

Uptime · 30d
Uptime · 90d92.2%100%
Uptime · 30d86.7%100%
P50 · ms18098
P95 · ms926961
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedCC BY-SA 4.0
Free tierFree — limits not publishedUnlimited within etiquette
Rate limitUnpublished200/sec global courtesy cap
In directory since2026-07-052026-05-09
operationalpartialdownno data

Datamuse vs Wikipedia REST: common questions

Which is more reliable, Datamuse or Wikipedia REST?

On our scheduled checks, Wikipedia REST leads on measured uptime — Datamuse at 92.2% versus Wikipedia REST 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 Wikipedia REST?

Wikipedia REST has the lower median latency in our checks — Datamuse responds in 180 ms versus Wikipedia REST at 98 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 Wikipedia REST need an API key?

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

Can I call Datamuse and Wikipedia REST from the browser?

Only Wikipedia REST is browser-friendly — it returns CORS headers over HTTPS. Datamuse needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Datamuse and Wikipedia REST free for commercial use?

Datamuse has unclear commercial terms, and Wikipedia REST 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.