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Poptin API vs ReqRes

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

APIPoptin APIREACHABLE100ReqResHEALTHY99
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms698121
P95 · ms1705498
AuthapiKeynone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified
Free tierFree — limits not published
Rate limit120 req/window · 119 remainingUnpublished
In directory since2026-10-042026-07-05
operationalpartialdownno data

Poptin API vs ReqRes: common questions

Which is more reliable, Poptin API or ReqRes?

Both are neck-and-neck — Poptin API 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, Poptin API or ReqRes?

ReqRes has the lower median latency in our checks — Poptin API responds in 698 ms versus ReqRes at 121 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 Poptin API and ReqRes need an API key?

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

Can I call Poptin API and ReqRes from the browser?

Only Poptin API 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 Poptin API and ReqRes free for commercial use?

Poptin API 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.