shipapis
StarSubmit an APISubmit API

Chess.com vs Game Brain

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

APIChess.comNEW—Game BrainNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — no API keyFree tier — API key required
Rate limitSerial requests expected; no fixed cap publishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Chess.com vs Game Brain: common questions

Which is more reliable, Chess.com or Game Brain?

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

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

Can I call Chess.com and Game Brain from the browser?

Yes — both Chess.com and Game Brain 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 Chess.com and Game Brain free for commercial use?

Chess.com has unclear commercial terms, and Game Brain 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.