Finnhub vs Frankfurter
Same instrument, two spec sheets — measured, not claimed.
Finnhub vs Frankfurter: common questions
Which is more reliable, Finnhub or Frankfurter?
On our scheduled checks, Finnhub leads on measured uptime — Finnhub at 100% versus Frankfurter at 88.2% 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, Finnhub or Frankfurter?
Finnhub has the lower median latency in our checks — Finnhub responds in 157 ms versus Frankfurter at 370 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 Finnhub and Frankfurter need an API key?
Frankfurter needs no key, while Finnhub requires a free API key. If you want to start calling without signup, reach for Frankfurter first.
Can I call Finnhub and Frankfurter from the browser?
Yes — both Finnhub and Frankfurter 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 Finnhub and Frankfurter free for commercial use?
Finnhub has unclear commercial terms, and Frankfurter allows commercial use on its free tier. 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.