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Danish data service Energi vs DFlight API

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

APIDanish data service EnergiHEALTHY87DFlight APIDEAD0
Uptime · 30d
Uptime · 90d100%11.8%
Uptime · 30d100%0.0%
P50 · ms888319
P95 · ms2789668
Authnonenone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — no API keyFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Danish data service Energi vs DFlight API: common questions

Which is more reliable, Danish data service Energi or DFlight API?

On our scheduled checks, Danish data service Energi leads on measured uptime — Danish data service Energi at 100% versus DFlight API at 11.8% 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, Danish data service Energi or DFlight API?

DFlight API has the lower median latency in our checks — Danish data service Energi responds in 888 ms versus DFlight API at 319 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 Danish data service Energi and DFlight API need an API key?

Neither needs a paid key — Danish data service Energi is callable with no signup, and DFlight API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Danish data service Energi and DFlight API from the browser?

Neither sends browser-friendly CORS headers reliably, so call Danish data service Energi and DFlight API from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Danish data service Energi and DFlight API free for commercial use?

Danish data service Energi has unclear commercial terms, and DFlight API 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.