US Autocomplete vs What The Commit

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

Uptime · 30d
Uptime · 90d99.02%99.02%
Uptime · 30d98.3%98.3%
P50 · ms6831312
P95 · ms19174279
AuthapiKeynone
CORSyesyes
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

US Autocomplete vs What The Commit: common questions

Which is more reliable, US Autocomplete or What The Commit?

Both are neck-and-neck — US Autocomplete and What The Commit each measure 99.02% 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, US Autocomplete or What The Commit?

US Autocomplete has the lower median latency in our checks — US Autocomplete responds in 683 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 US Autocomplete and What The Commit need an API key?

What The Commit needs no key, while US Autocomplete requires a free API key. If you want to start calling without signup, reach for What The Commit first.

Can I call US Autocomplete and What The Commit from the browser?

Only US Autocomplete 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 US Autocomplete and What The Commit free for commercial use?

US Autocomplete 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.