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OpenCorporates vs RuntimeBuzz Article API

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

APIOpenCorporatesNEW—RuntimeBuzz Article APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

OpenCorporates vs RuntimeBuzz Article API: common questions

Which is more reliable, OpenCorporates or RuntimeBuzz Article API?

On our scheduled checks, RuntimeBuzz Article API leads on measured uptime — OpenCorporates at —% versus RuntimeBuzz Article 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 OpenCorporates and RuntimeBuzz Article API need an API key?

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

Can I call OpenCorporates and RuntimeBuzz Article API from the browser?

Neither sends browser-friendly CORS headers reliably, so call OpenCorporates and RuntimeBuzz Article API from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are OpenCorporates and RuntimeBuzz Article API free for commercial use?

OpenCorporates has unclear commercial terms, and RuntimeBuzz Article 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.