Grass Touch API vs Telegraph
Same instrument, two spec sheets — measured, not claimed.
Grass Touch API vs Telegraph: common questions
Which is more reliable, Grass Touch API or Telegraph?
On our scheduled checks, Telegraph leads on measured uptime — Grass Touch API at 2.9% versus Telegraph at 99.02% 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, Grass Touch API or Telegraph?
Telegraph has the lower median latency in our checks — Grass Touch API responds in 1701 ms versus Telegraph at 801 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 Grass Touch API and Telegraph need an API key?
Grass Touch API needs no key, while Telegraph requires a free API key. If you want to start calling without signup, reach for Grass Touch API first.
Can I call Grass Touch API and Telegraph from the browser?
Only Telegraph is browser-friendly — it returns CORS headers over HTTPS. Grass Touch API needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Grass Touch API and Telegraph free for commercial use?
Grass Touch API has unclear commercial terms, and Telegraph 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.