positionstack vs ViaCep
Same instrument, two spec sheets — measured, not claimed.
positionstack vs ViaCep: common questions
Which is more reliable, positionstack or ViaCep?
On our scheduled checks, positionstack leads on measured uptime — positionstack at 100% versus ViaCep at 98.0% 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, positionstack or ViaCep?
positionstack has the lower median latency in our checks — positionstack responds in 455 ms versus ViaCep at 651 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 positionstack and ViaCep need an API key?
ViaCep needs no key, while positionstack requires a free API key. If you want to start calling without signup, reach for ViaCep first.
Can I call positionstack and ViaCep from the browser?
Only ViaCep is browser-friendly — it returns CORS headers over HTTPS. positionstack needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are positionstack and ViaCep free for commercial use?
positionstack has unclear commercial terms, and ViaCep 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.