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OpenAlex vs Replicate

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

APIOpenAlexNEW—ReplicateNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licenseCC0Unverified
Free tierFree tier (~$1/day of usage); free API key available for moreFree tier — API key required
Rate limitUsage-metered free tier (~$1/day per docs)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

OpenAlex vs Replicate: common questions

Which is more reliable, OpenAlex or Replicate?

On our scheduled checks, Replicate leads on measured uptime — OpenAlex at —% versus Replicate 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 OpenAlex and Replicate need an API key?

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

Can I call OpenAlex and Replicate from the browser?

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

Are OpenAlex and Replicate free for commercial use?

OpenAlex allows commercial use on its free tier, and Replicate 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.