Data.parliament.uk vs Data USA
Same instrument, two spec sheets — measured, not claimed.
Data.parliament.uk vs Data USA: common questions
Which is more reliable, Data.parliament.uk or Data USA?
On our scheduled checks, Data USA leads on measured uptime — Data.parliament.uk at 99.02% versus Data USA at 100% 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, Data.parliament.uk or Data USA?
Data.parliament.uk has the lower median latency in our checks — Data.parliament.uk responds in 362 ms versus Data USA at 433 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 Data.parliament.uk and Data USA need an API key?
Neither needs a paid key — Data.parliament.uk is callable with no signup, and Data USA is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Data.parliament.uk and Data USA from the browser?
Yes — both Data.parliament.uk and Data USA 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 Data.parliament.uk and Data USA free for commercial use?
Data.parliament.uk allows commercial use on its free tier, and Data USA 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.