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APITube vs Datamuse

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

APIAPITubeNEW—DatamuseNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierTrial — API key requiredFree — limits not published
Rate limitPlan-dependentUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

APITube vs Datamuse: common questions

Which is more reliable, APITube or Datamuse?

On our scheduled checks, Datamuse leads on measured uptime — APITube at —% versus Datamuse 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 APITube and Datamuse need an API key?

Datamuse needs no key, while APITube requires a free API key. If you want to start calling without signup, reach for Datamuse first.

Can I call APITube and Datamuse from the browser?

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

Are APITube and Datamuse free for commercial use?

APITube has unclear commercial terms, and Datamuse 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.