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eLife Sciences API vs VATlayer

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

APIeLife Sciences APIHEALTHY95VATlayerHEALTHY93
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms409473
P95 · ms10392118
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

eLife Sciences API vs VATlayer: common questions

Which is more reliable, eLife Sciences API or VATlayer?

Both are neck-and-neck — eLife Sciences API and VATlayer 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, eLife Sciences API or VATlayer?

eLife Sciences API has the lower median latency in our checks — eLife Sciences API responds in 409 ms versus VATlayer at 473 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 eLife Sciences API and VATlayer need an API key?

eLife Sciences API needs no key, while VATlayer requires a free API key. If you want to start calling without signup, reach for eLife Sciences API first.

Can I call eLife Sciences API and VATlayer from the browser?

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

Are eLife Sciences API and VATlayer free for commercial use?

eLife Sciences API has unclear commercial terms, and VATlayer 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.