Atlas Academy vs Zelda
Same instrument, two spec sheets — measured, not claimed.
Atlas Academy vs Zelda: common questions
Which is more reliable, Atlas Academy or Zelda?
Both are neck-and-neck — Atlas Academy and Zelda each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.
Which is faster, Atlas Academy or Zelda?
Atlas Academy has the lower median latency in our checks — Atlas Academy responds in 743 ms versus Zelda at 903 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 Atlas Academy and Zelda need an API key?
Neither needs a paid key — Atlas Academy is callable with no signup, and Zelda is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Atlas Academy and Zelda from the browser?
Yes — both Atlas Academy and Zelda 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 Atlas Academy and Zelda free for commercial use?
Atlas Academy has unclear commercial terms, and Zelda 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.