Currents vs OkSurf
Same instrument, two spec sheets — measured, not claimed.
Currents vs OkSurf: common questions
Which is more reliable, Currents or OkSurf?
Both are neck-and-neck — Currents and OkSurf 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, Currents or OkSurf?
Currents has the lower median latency in our checks — Currents responds in 586 ms versus OkSurf at 624 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 Currents and OkSurf need an API key?
OkSurf needs no key, while Currents requires a free API key. If you want to start calling without signup, reach for OkSurf first.
Can I call Currents and OkSurf from the browser?
Neither sends browser-friendly CORS headers reliably, so call Currents and OkSurf from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.
Are Currents and OkSurf free for commercial use?
Currents has unclear commercial terms, and OkSurf 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.