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CarAPI vs Transport for Paris, France

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

APICarAPIHEALTHY70Transport for Paris, FranceHEALTHY67
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms1223931
P95 · ms22872253
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key may be required for productionFree — limits not published
Rate limitUnpublishedOpenDataSoft platform defaults (unpublished here)
In directory since2026-07-052026-07-05
operationalpartialdownno data

CarAPI vs Transport for Paris, France: common questions

Which is more reliable, CarAPI or Transport for Paris, France?

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

Transport for Paris, France has the lower median latency in our checks — CarAPI responds in 1223 ms versus Transport for Paris, France at 931 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 CarAPI and Transport for Paris, France need an API key?

Transport for Paris, France needs no key, while CarAPI requires a free API key. If you want to start calling without signup, reach for Transport for Paris, France first.

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

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

Are CarAPI and Transport for Paris, France free for commercial use?

CarAPI has unclear commercial terms, and Transport for Paris, France 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.