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Free Dictionary API vs Invokely

Same instrument, two spec sheets — measured, not claimed.

APIFree Dictionary APIHEALTHY95InvokelyREACHABLE100
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms231227
P95 · ms3229245
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified
Free tierFree — limits not published
Rate limitUnpublished
In directory since2026-07-052026-10-12
operationalpartialdownno data

Free Dictionary API vs Invokely: common questions

Which is more reliable, Free Dictionary API or Invokely?

Both are neck-and-neck — Free Dictionary API and Invokely 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 Invokely?

Invokely has the lower median latency in our checks — Free Dictionary API responds in 231 ms versus Invokely at 227 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 Invokely need an API key?

Free Dictionary API needs no key, while Invokely requires a free API key. If you want to start calling without signup, reach for Free Dictionary API first.

Can I call Free Dictionary API and Invokely from the browser?

Yes — both Free Dictionary API and Invokely 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 Invokely free for commercial use?

Free Dictionary API has unclear commercial terms, and Invokely 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.