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Onyx Bazaar vs xAI Grok API

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

APIOnyx BazaarNEW—xAI Grok APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Onyx Bazaar vs xAI Grok API: common questions

Which is more reliable, Onyx Bazaar or xAI Grok API?

On our scheduled checks, xAI Grok API leads on measured uptime — Onyx Bazaar at —% versus xAI Grok 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 Onyx Bazaar and xAI Grok API need an API key?

Onyx Bazaar needs no key, while xAI Grok API requires a free API key. If you want to start calling without signup, reach for Onyx Bazaar first.

Can I call Onyx Bazaar and xAI Grok API from the browser?

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

Are Onyx Bazaar and xAI Grok API free for commercial use?

Onyx Bazaar has unclear commercial terms, and xAI Grok 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.