Keyvalue vs Notion
Same instrument, two spec sheets — measured, not claimed.
Keyvalue vs Notion: common questions
Which is more reliable, Keyvalue or Notion?
On our scheduled checks, Notion leads on measured uptime — Keyvalue at 86.3% versus Notion at 100% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, Keyvalue or Notion?
Notion has the lower median latency in our checks — Keyvalue responds in 855 ms versus Notion at 524 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 Keyvalue and Notion need an API key?
Keyvalue needs no key, while Notion requires OAuth. If you want to start calling without signup, reach for Keyvalue first.
Can I call Keyvalue and Notion from the browser?
Yes — both Keyvalue and Notion send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are Keyvalue and Notion free for commercial use?
Keyvalue 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.