CongressInvests vs Finnhub
Same instrument, two spec sheets — measured, not claimed.
CongressInvests vs Finnhub: common questions
Which is more reliable, CongressInvests or Finnhub?
Both are neck-and-neck — CongressInvests and Finnhub 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, CongressInvests or Finnhub?
Finnhub has the lower median latency in our checks — CongressInvests responds in 615 ms versus Finnhub at 157 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 CongressInvests and Finnhub need an API key?
Both ask you to authenticate — CongressInvests uses an API key and Finnhub 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 CongressInvests and Finnhub from the browser?
Yes — both CongressInvests and Finnhub 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 CongressInvests and Finnhub free for commercial use?
CongressInvests has unclear commercial terms, and Finnhub 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.