CompanyData.com vs Twelve Data
Same instrument, two spec sheets — measured, not claimed.
CompanyData.com vs Twelve Data: common questions
Which is more reliable, CompanyData.com or Twelve Data?
On our scheduled checks, Twelve Data leads on measured uptime — CompanyData.com at 49.0% 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, CompanyData.com or Twelve Data?
CompanyData.com has the lower median latency in our checks — CompanyData.com responds in 243 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 CompanyData.com and Twelve Data need an API key?
CompanyData.com needs no key, while Twelve Data requires a free API key. If you want to start calling without signup, reach for CompanyData.com first.
Can I call CompanyData.com and Twelve Data from the browser?
Yes — both CompanyData.com and Twelve Data send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are CompanyData.com and Twelve Data free for commercial use?
CompanyData.com 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.