OpenSanctions vs Warnely
Same instrument, two spec sheets — measured, not claimed.
OpenSanctions vs Warnely: common questions
Which is more reliable, OpenSanctions or Warnely?
On our scheduled checks, OpenSanctions leads on measured uptime — OpenSanctions at 100% versus Warnely at 90.2% 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, OpenSanctions or Warnely?
Warnely has the lower median latency in our checks — OpenSanctions responds in 387 ms versus Warnely at 334 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 OpenSanctions and Warnely need an API key?
Neither needs a paid key — OpenSanctions is callable with no signup, and Warnely is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call OpenSanctions and Warnely from the browser?
Only OpenSanctions is browser-friendly — it returns CORS headers over HTTPS. Warnely needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are OpenSanctions and Warnely free for commercial use?
OpenSanctions has unclear commercial terms, and Warnely 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.