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OpenQR vs SEO Score

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

APIOpenQRHEALTHY80SEO ScoreHEALTHY91
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms1125634
P95 · ms28511704
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

OpenQR vs SEO Score: common questions

Which is more reliable, OpenQR or SEO Score?

Both are neck-and-neck — OpenQR and SEO Score 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 SEO Score?

SEO Score has the lower median latency in our checks — OpenQR responds in 1125 ms versus SEO Score at 634 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 SEO Score need an API key?

Both ask you to authenticate — OpenQR uses an API key and SEO Score uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call OpenQR and SEO Score from the browser?

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

Are OpenQR and SEO Score free for commercial use?

OpenQR has unclear commercial terms, and SEO Score 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.