CongressInvests vs Plaid API
Same instrument, two spec sheets — measured, not claimed.
CongressInvests vs Plaid API: common questions
Which is more reliable, CongressInvests or Plaid API?
Both are neck-and-neck — CongressInvests and Plaid API 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 Plaid API?
Plaid API has the lower median latency in our checks — CongressInvests responds in 615 ms versus Plaid API at 359 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 Plaid API need an API key?
Both ask you to authenticate — CongressInvests uses an API key and Plaid API 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 Plaid API from the browser?
Yes — both CongressInvests and Plaid API 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 Plaid API free for commercial use?
CongressInvests has unclear commercial terms, and Plaid API 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.