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Battle.net vs Chess.com

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

APIBattle.netNEW—Chess.comNEW—
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 requiredFree — no API key
Rate limitUnpublishedSerial requests expected; no fixed cap published
In directory since2026-07-052026-07-05
operationalpartialdownno data

Battle.net vs Chess.com: common questions

Which is more reliable, Battle.net or Chess.com?

On our scheduled checks, Chess.com leads on measured uptime — Battle.net at —% versus Chess.com 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 Battle.net and Chess.com need an API key?

Chess.com needs no key, while Battle.net requires a free API key. If you want to start calling without signup, reach for Chess.com first.

Can I call Battle.net and Chess.com from the browser?

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

Are Battle.net and Chess.com free for commercial use?

Battle.net has unclear commercial terms, and Chess.com 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.