Congressional Stock Brain vs Frankfurter
Same instrument, two spec sheets — measured, not claimed.
Congressional Stock Brain vs Frankfurter: common questions
Which is more reliable, Congressional Stock Brain or Frankfurter?
On our scheduled checks, Congressional Stock Brain leads on measured uptime — Congressional Stock Brain 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, Congressional Stock Brain or Frankfurter?
Frankfurter has the lower median latency in our checks — Congressional Stock Brain responds in 385 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 Congressional Stock Brain and Frankfurter need an API key?
Neither needs a paid key — Congressional Stock Brain is callable with no signup, and Frankfurter is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Congressional Stock Brain and Frankfurter from the browser?
Yes — both Congressional Stock Brain 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 Congressional Stock Brain and Frankfurter free for commercial use?
Congressional Stock Brain 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.