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OpenQR vs Vector Express v2.0

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

APIOpenQRHEALTHY80Vector Express v2.0HEALTHY91
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms1125613
P95 · ms28511662
AuthapiKeynone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree
Rate limitUnpublished5 req/window · 4 remaining · resets 1783513379
In directory since2026-07-052026-07-05
operationalpartialdownno data

OpenQR vs Vector Express v2.0: common questions

Which is more reliable, OpenQR or Vector Express v2.0?

Both are neck-and-neck — OpenQR and Vector Express v2.0 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, OpenQR or Vector Express v2.0?

Vector Express v2.0 has the lower median latency in our checks — OpenQR responds in 1125 ms versus Vector Express v2.0 at 613 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 OpenQR and Vector Express v2.0 need an API key?

Vector Express v2.0 needs no key, while OpenQR requires a free API key. If you want to start calling without signup, reach for Vector Express v2.0 first.

Can I call OpenQR and Vector Express v2.0 from the browser?

Only OpenQR is browser-friendly — it returns CORS headers over HTTPS. Vector Express v2.0 needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are OpenQR and Vector Express v2.0 free for commercial use?

OpenQR has unclear commercial terms, and Vector Express v2.0 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.