CongressInvests vs PredScope
Same instrument, two spec sheets — measured, not claimed.
CongressInvests vs PredScope: common questions
Which is more reliable, CongressInvests or PredScope?
Both are neck-and-neck — CongressInvests and PredScope 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 PredScope?
PredScope has the lower median latency in our checks — CongressInvests responds in 615 ms versus PredScope at 326 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 PredScope need an API key?
PredScope needs no key, while CongressInvests requires a free API key. If you want to start calling without signup, reach for PredScope first.
Can I call CongressInvests and PredScope from the browser?
Yes — both CongressInvests and PredScope 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 PredScope free for commercial use?
CongressInvests has unclear commercial terms, and PredScope 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.