DFlight API vs Groundhog Day API
Same instrument, two spec sheets — measured, not claimed.
DFlight API vs Groundhog Day API: common questions
Which is more reliable, DFlight API or Groundhog Day API?
On our scheduled checks, Groundhog Day API leads on measured uptime — DFlight API at 11.8% versus Groundhog Day API 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, DFlight API or Groundhog Day API?
Groundhog Day API has the lower median latency in our checks — DFlight API responds in 319 ms versus Groundhog Day API at 262 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 DFlight API and Groundhog Day API need an API key?
Neither needs a paid key — DFlight API is callable with no signup, and Groundhog Day API is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call DFlight API and Groundhog Day API from the browser?
Only Groundhog Day API is browser-friendly — it returns CORS headers over HTTPS. DFlight API needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are DFlight API and Groundhog Day API free for commercial use?
DFlight API has unclear commercial terms, and Groundhog Day 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.