Adoptium vs ELI

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

Uptime · 30d
Uptime · 90d100%99.02%
Uptime · 30d100%98.3%
P50 · ms476591
P95 · ms12551817
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key may be required for production
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Adoptium vs ELI: common questions

Which is more reliable, Adoptium or ELI?

On our scheduled checks, Adoptium leads on measured uptime — Adoptium at 100% versus ELI at 99.02% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Adoptium or ELI?

Adoptium has the lower median latency in our checks — Adoptium responds in 476 ms versus ELI at 591 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 ELI need an API key?

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

Can I call Adoptium and ELI from the browser?

Yes — both Adoptium and ELI 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 Adoptium and ELI free for commercial use?

Adoptium has unclear commercial terms, and ELI 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.