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Blockchair vs DeFi Llama

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

APIBlockchairNEW—DeFi LlamaNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
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

Blockchair vs DeFi Llama: common questions

Which is more reliable, Blockchair or DeFi Llama?

On our scheduled checks, DeFi Llama leads on measured uptime — Blockchair at —% versus DeFi Llama 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 Blockchair and DeFi Llama need an API key?

Neither needs a paid key — Blockchair is callable with no signup, and DeFi Llama is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Blockchair and DeFi Llama from the browser?

Yes — both Blockchair and DeFi Llama 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 Blockchair and DeFi Llama free for commercial use?

Blockchair has unclear commercial terms, and DeFi Llama 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.