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APITube vs Free Dictionary API

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

APIAPITubeNEW—Free Dictionary APINEW—
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 Free Dictionary API: common questions

Which is more reliable, APITube or Free Dictionary API?

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

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

Can I call APITube and Free Dictionary API from the browser?

Only Free Dictionary API 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 Free Dictionary API free for commercial use?

APITube has unclear commercial terms, and Free Dictionary API 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.