arcsecond.io vs Diffbot API
Same instrument, two spec sheets — measured, not claimed.
arcsecond.io vs Diffbot API: common questions
Which is more reliable, arcsecond.io or Diffbot API?
On our scheduled checks, Diffbot API leads on measured uptime — arcsecond.io at 57.9% versus Diffbot 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, arcsecond.io or Diffbot API?
arcsecond.io has the lower median latency in our checks — arcsecond.io responds in 503 ms versus Diffbot API at 780 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 arcsecond.io and Diffbot API need an API key?
arcsecond.io needs no key, while Diffbot API requires a free API key. If you want to start calling without signup, reach for arcsecond.io first.
Can I call arcsecond.io and Diffbot API from the browser?
Yes — both arcsecond.io and Diffbot API send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are arcsecond.io and Diffbot API free for commercial use?
arcsecond.io has unclear commercial terms, and Diffbot 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.