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Blockchain vs Gemini

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

APIBlockchainNEW—GeminiNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredPublic market data endpoints are keyless and free
Rate limitUnpublishedPublic API throttled per IP (specific numeric limit not confirmed at probe time)
In directory since2026-07-052026-07-05
operationalpartialdownno data

Blockchain vs Gemini: common questions

Which is more reliable, Blockchain or Gemini?

On our scheduled checks, Gemini leads on measured uptime — Blockchain at —% versus Gemini 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 Blockchain and Gemini need an API key?

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

Can I call Blockchain and Gemini from the browser?

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

Are Blockchain and Gemini free for commercial use?

Blockchain has unclear commercial terms, and Gemini 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.