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Abstract API vs Notion

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

APIAbstract APINEW—NotionREACHABLE—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyoauth
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key may be required for productionOAuth — some read routes may be public
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Abstract API vs Notion: common questions

Which is more reliable, Abstract API or Notion?

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

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

Can I call Abstract API and Notion from the browser?

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

Are Abstract API and Notion free for commercial use?

Abstract API has unclear commercial terms, and Notion 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.