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arcsecond.io vs Jina AI

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

APIarcsecond.ioNEW—Jina AINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key may be required for production
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

arcsecond.io vs Jina AI: common questions

Which is more reliable, arcsecond.io or Jina AI?

On our scheduled checks, Jina AI leads on measured uptime — arcsecond.io at —% versus Jina AI 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 arcsecond.io and Jina AI need an API key?

arcsecond.io needs no key, while Jina AI requires a free API key. If you want to start calling without signup, reach for arcsecond.io first.

Can I call arcsecond.io and Jina AI from the browser?

Yes — both arcsecond.io and Jina AI 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 arcsecond.io and Jina AI free for commercial use?

arcsecond.io has unclear commercial terms, and Jina AI 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.