OkSurf vs Quandl
Same instrument, two spec sheets — measured, not claimed.
OkSurf vs Quandl: common questions
Which is more reliable, OkSurf or Quandl?
Both are neck-and-neck — OkSurf and Quandl 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, OkSurf or Quandl?
OkSurf has the lower median latency in our checks — OkSurf responds in 624 ms versus Quandl at 823 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 OkSurf and Quandl need an API key?
Neither needs a paid key — OkSurf is callable with no signup, and Quandl is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call OkSurf and Quandl from the browser?
Neither sends browser-friendly CORS headers reliably, so call OkSurf and Quandl from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.
Are OkSurf and Quandl free for commercial use?
OkSurf has unclear commercial terms, and Quandl 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.