Fixer API vs OkSurf
Same instrument, two spec sheets — measured, not claimed.
Fixer API vs OkSurf: common questions
Which is more reliable, Fixer API or OkSurf?
On our scheduled checks, OkSurf leads on measured uptime — Fixer API at 99.02% versus OkSurf 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, Fixer API or OkSurf?
Fixer API has the lower median latency in our checks — Fixer API responds in 448 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 Fixer API and OkSurf need an API key?
OkSurf needs no key, while Fixer API requires a free API key. If you want to start calling without signup, reach for OkSurf first.
Can I call Fixer API and OkSurf from the browser?
Neither sends browser-friendly CORS headers reliably, so call Fixer API 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 Fixer API and OkSurf free for commercial use?
Fixer API 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.