Adoptium vs ReqRes
Same instrument, two spec sheets — measured, not claimed.
Adoptium vs ReqRes: common questions
Which is more reliable, Adoptium or ReqRes?
Both are neck-and-neck — Adoptium and ReqRes each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.
Which is faster, Adoptium or ReqRes?
ReqRes has the lower median latency in our checks — Adoptium responds in 476 ms versus ReqRes at 256 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.
Do Adoptium and ReqRes need an API key?
Neither needs a paid key — Adoptium is callable with no signup, and ReqRes is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Adoptium and ReqRes from the browser?
Only Adoptium is browser-friendly — it returns CORS headers over HTTPS. ReqRes needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Adoptium and ReqRes free for commercial use?
Adoptium has unclear commercial terms, and ReqRes 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.