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Chess.com vs RAWG.io

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

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

Chess.com vs RAWG.io: common questions

Which is more reliable, Chess.com or RAWG.io?

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

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

Can I call Chess.com and RAWG.io from the browser?

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

Are Chess.com and RAWG.io free for commercial use?

Chess.com has unclear commercial terms, and RAWG.io 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.