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Vector Express v2.0 vs What The Commit

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

APIVector Express v2.0NEW—What The CommitNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFreeFree — limits not published
Rate limit5 req/window · 4 remaining · resets 1783513379Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Vector Express v2.0 vs What The Commit: common questions

Which is more reliable, Vector Express v2.0 or What The Commit?

On our scheduled checks, What The Commit leads on measured uptime — Vector Express v2.0 at —% versus What The Commit at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Vector Express v2.0 and What The Commit need an API key?

Neither needs a paid key — Vector Express v2.0 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 Vector Express v2.0 and What The Commit from the browser?

Neither sends browser-friendly CORS headers reliably, so call Vector Express v2.0 and What The Commit from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Vector Express v2.0 and What The Commit free for commercial use?

Vector Express v2.0 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.