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Datamuse vs FIRST News API

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

APIDatamuseHEALTHY94FIRST News APIHEALTHY85
Uptime · 30d
Uptime · 90d92.2%100%
Uptime · 30d86.7%100%
P50 · ms180780
P95 · ms9261595
Authnonenone
CORSnoyes
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 FIRST News API: common questions

Which is more reliable, Datamuse or FIRST News API?

On our scheduled checks, FIRST News API leads on measured uptime — Datamuse at 92.2% versus FIRST News API at 100% 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, Datamuse or FIRST News API?

Datamuse has the lower median latency in our checks — Datamuse responds in 180 ms versus FIRST News API at 780 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 Datamuse and FIRST News API need an API key?

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

Can I call Datamuse and FIRST News API from the browser?

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

Are Datamuse and FIRST News API free for commercial use?

Datamuse has unclear commercial terms, and FIRST News 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.