Cataas vs Dog CEO
Same instrument, two spec sheets — measured, not claimed.
Cataas vs Dog CEO: common questions
Which is more reliable, Cataas or Dog CEO?
Both are neck-and-neck — Cataas and Dog CEO 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, Cataas or Dog CEO?
Dog CEO has the lower median latency in our checks — Cataas responds in 601 ms versus Dog CEO at 245 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 Cataas and Dog CEO need an API key?
Neither needs a paid key — Cataas is callable with no signup, and Dog CEO is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Cataas and Dog CEO from the browser?
Yes — both Cataas and Dog CEO 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 Cataas and Dog CEO free for commercial use?
Cataas has unclear commercial terms, and Dog CEO allows commercial use on its free tier. 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.