Marketstack vs TaxID
Same instrument, two spec sheets — measured, not claimed.
Marketstack vs TaxID: common questions
Which is more reliable, Marketstack or TaxID?
Both are neck-and-neck — Marketstack and TaxID 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, Marketstack or TaxID?
Marketstack has the lower median latency in our checks — Marketstack responds in 470 ms versus TaxID at 729 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 Marketstack and TaxID need an API key?
Both ask you to authenticate — Marketstack uses an API key and TaxID uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.
Can I call Marketstack and TaxID from the browser?
Neither sends browser-friendly CORS headers reliably, so call Marketstack and TaxID from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.
Are Marketstack and TaxID free for commercial use?
Marketstack has unclear commercial terms, and TaxID 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.