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Datamuse vs Voidly

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

APIDatamuseNEW—VoidlyNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedCC BY 4.0
Free tierFree — limits not publishedFree (keyless data endpoints; Hydra ML endpoints need a key)
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Datamuse vs Voidly: common questions

Which is more reliable, Datamuse or Voidly?

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

Do Datamuse and Voidly need an API key?

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

Can I call Datamuse and Voidly from the browser?

Yes — both Datamuse and Voidly 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 Datamuse and Voidly free for commercial use?

Datamuse has unclear commercial terms, and Voidly 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.