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Transport for Paris, France vs Transport for Philadelphia, US

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

APITransport for Paris, FranceHEALTHY67Transport for Philadelphia, USHEALTHY86
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms931714
P95 · ms22534585
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitOpenDataSoft platform defaults (unpublished here)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Transport for Paris, France vs Transport for Philadelphia, US: common questions

Which is more reliable, Transport for Paris, France or Transport for Philadelphia, US?

Both are neck-and-neck — Transport for Paris, France and Transport for Philadelphia, US 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, Transport for Paris, France or Transport for Philadelphia, US?

Transport for Philadelphia, US has the lower median latency in our checks — Transport for Paris, France responds in 931 ms versus Transport for Philadelphia, US at 714 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 Transport for Paris, France and Transport for Philadelphia, US need an API key?

Neither needs a paid key — Transport for Paris, France is callable with no signup, and Transport for Philadelphia, US is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Transport for Paris, France and Transport for Philadelphia, US from the browser?

Only Transport for Paris, France is browser-friendly — it returns CORS headers over HTTPS. Transport for Philadelphia, US needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Transport for Paris, France and Transport for Philadelphia, US free for commercial use?

Transport for Paris, France has unclear commercial terms, and Transport for Philadelphia, US 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.