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Adoptium vs What The Commit

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

APIAdoptiumHEALTHY92What The CommitHEALTHY79
Uptime · 30d
Uptime · 90d100%99.02%
Uptime · 30d100%98.3%
P50 · ms4761312
P95 · ms12554279
Authnonenone
CORSyesyes
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Adoptium vs What The Commit: common questions

Which is more reliable, Adoptium or What The Commit?

On our scheduled checks, Adoptium leads on measured uptime — Adoptium at 100% versus What The Commit 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 What The Commit?

Adoptium has the lower median latency in our checks — Adoptium responds in 476 ms versus What The Commit at 1312 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 What The Commit need an API key?

Neither needs a paid key — Adoptium is callable with no signup, and What The Commit is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Adoptium and What The Commit from the browser?

Only Adoptium is browser-friendly — it returns CORS headers over HTTPS. What The Commit needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Adoptium and What The Commit free for commercial use?

Adoptium has unclear commercial terms, and What The Commit 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.