Free Dictionary API vs Wikipedia REST
Same instrument, two spec sheets — measured, not claimed.
Free Dictionary API vs Wikipedia REST: common questions
Which is more reliable, Free Dictionary API or Wikipedia REST?
Both are neck-and-neck — Free Dictionary API and Wikipedia REST 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, Free Dictionary API or Wikipedia REST?
Wikipedia REST has the lower median latency in our checks — Free Dictionary API responds in 674 ms versus Wikipedia REST at 98 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 Free Dictionary API and Wikipedia REST need an API key?
Neither needs a paid key — Free Dictionary API is callable with no signup, and Wikipedia REST is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Free Dictionary API and Wikipedia REST from the browser?
Yes — both Free Dictionary API and Wikipedia REST 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 Free Dictionary API and Wikipedia REST free for commercial use?
Free Dictionary API has unclear commercial terms, and Wikipedia REST 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.