GrünstromIndex vs Website Carbon
Same instrument, two spec sheets — measured, not claimed.
GrünstromIndex vs Website Carbon: common questions
Which is more reliable, GrünstromIndex or Website Carbon?
On our scheduled checks, Website Carbon leads on measured uptime — GrünstromIndex at 73.5% versus Website Carbon 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, GrünstromIndex or Website Carbon?
Website Carbon has the lower median latency in our checks — GrünstromIndex responds in 1072 ms versus Website Carbon at 37 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 GrünstromIndex and Website Carbon need an API key?
Neither needs a paid key — GrünstromIndex is callable with no signup, and Website Carbon is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call GrünstromIndex and Website Carbon from the browser?
Only GrünstromIndex is browser-friendly — it returns CORS headers over HTTPS. Website Carbon needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are GrünstromIndex and Website Carbon free for commercial use?
GrünstromIndex has unclear commercial terms, and Website Carbon 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.