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Datamuse vs iTunes

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

APIDatamuseNEW—iTunesNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Datamuse vs iTunes: common questions

Which is more reliable, Datamuse or iTunes?

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

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

Can I call Datamuse and iTunes from the browser?

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

Are Datamuse and iTunes free for commercial use?

Datamuse has unclear commercial terms, and iTunes 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.