RhymeBrain vs Wiktionary

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

Uptime · 30d
Uptime · 90d100%99.02%
Uptime · 30d100%100%
P50 · ms649542
P95 · ms16364709
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedContent under CC BY-SA 4.0 / GFDL
Free tierFree — limits not publishedFree — public MediaWiki action API
Rate limitUnpublishedNo hard published cap; Wikimedia User-Agent policy and request-etiquette apply
In directory since2026-07-052026-07-05
operationalpartialdownno data

RhymeBrain vs Wiktionary: common questions

Which is more reliable, RhymeBrain or Wiktionary?

On our scheduled checks, RhymeBrain leads on measured uptime — RhymeBrain at 100% versus Wiktionary at 99.02% 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, RhymeBrain or Wiktionary?

Wiktionary has the lower median latency in our checks — RhymeBrain responds in 649 ms versus Wiktionary at 542 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 RhymeBrain and Wiktionary need an API key?

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

Can I call RhymeBrain and Wiktionary from the browser?

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

Are RhymeBrain and Wiktionary free for commercial use?

RhymeBrain has unclear commercial terms, and Wiktionary 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.