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City, Toronto Open Data vs Data.parliament.uk

Same instrument, two spec sheets — measured, not claimed.

APICity, Toronto Open DataHEALTHY87Data.parliament.ukHEALTHY95
Uptime · 30d
Uptime · 90d99.02%99.02%
Uptime · 30d100%100%
P50 · ms872362
P95 · ms21703954
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedOpen Parliament Licence
Free tierFree — no key required (CKAN)Free / open data
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

City, Toronto Open Data vs Data.parliament.uk: common questions

Which is more reliable, City, Toronto Open Data or Data.parliament.uk?

Both are neck-and-neck — City, Toronto Open Data and Data.parliament.uk each measure 99.02% 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, City, Toronto Open Data or Data.parliament.uk?

Data.parliament.uk has the lower median latency in our checks — City, Toronto Open Data responds in 872 ms versus Data.parliament.uk at 362 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 City, Toronto Open Data and Data.parliament.uk need an API key?

Neither needs a paid key — City, Toronto Open Data is callable with no signup, and Data.parliament.uk is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call City, Toronto Open Data and Data.parliament.uk from the browser?

Only Data.parliament.uk is browser-friendly — it returns CORS headers over HTTPS. City, Toronto Open Data needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are City, Toronto Open Data and Data.parliament.uk free for commercial use?

City, Toronto Open Data has unclear commercial terms, and Data.parliament.uk 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.