TaxID vs Twelve Data
Same instrument, two spec sheets — measured, not claimed.
TaxID vs Twelve Data: common questions
Which is more reliable, TaxID or Twelve Data?
On our scheduled checks, TaxID leads on measured uptime — TaxID at 100% versus Twelve Data at 99.02% 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, TaxID or Twelve Data?
Twelve Data has the lower median latency in our checks — TaxID responds in 729 ms versus Twelve Data at 253 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 TaxID and Twelve Data need an API key?
Both ask you to authenticate — TaxID uses an API key and Twelve Data 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 TaxID and Twelve Data from the browser?
Only Twelve Data is browser-friendly — it returns CORS headers over HTTPS. TaxID needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are TaxID and Twelve Data free for commercial use?
TaxID has unclear commercial terms, and Twelve Data 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.