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CoinGecko vs Exchange Rates API

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

APICoinGeckoDEGRADED—Exchange Rates APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseProprietary — attribution requiredUnverified
Free tier10k calls/mo demo key, no cardFree — limits not published
Rate limit~30/min, tightens under loadUnpublished
In directory since2026-05-022026-07-05
operationalpartialdownno data

CoinGecko vs Exchange Rates API: common questions

Which is more reliable, CoinGecko or Exchange Rates API?

On our scheduled checks, Exchange Rates API leads on measured uptime — CoinGecko at —% versus Exchange Rates 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 CoinGecko and Exchange Rates API need an API key?

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

Can I call CoinGecko and Exchange Rates API from the browser?

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

Are CoinGecko and Exchange Rates API free for commercial use?

CoinGecko has unclear commercial terms, and Exchange Rates 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.