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Wiktionary vs Wolne Lektury

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

APIWiktionaryHEALTHY88Wolne LekturyHEALTHY65
Uptime · 30d
Uptime · 90d99.02%75.5%
Uptime · 30d100%81.7%
P50 · ms5421145
P95 · ms47094998
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licenseContent under CC BY-SA 4.0 / GFDLWorks are public domain or on free/Creative Commons licenses (per WolneLektury); API terms not formally stated
Free tierFree — public MediaWiki action APIFree — limits not published
Rate limitNo hard published cap; Wikimedia User-Agent policy and request-etiquette applyUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Wiktionary vs Wolne Lektury: common questions

Which is more reliable, Wiktionary or Wolne Lektury?

On our scheduled checks, Wiktionary leads on measured uptime — Wiktionary at 99.02% versus Wolne Lektury at 75.5% 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, Wiktionary or Wolne Lektury?

Wiktionary has the lower median latency in our checks — Wiktionary responds in 542 ms versus Wolne Lektury at 1145 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 Wiktionary and Wolne Lektury need an API key?

Neither needs a paid key — Wiktionary is callable with no signup, and Wolne Lektury is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Wiktionary and Wolne Lektury from the browser?

Only Wolne Lektury is browser-friendly — it returns CORS headers over HTTPS. Wiktionary needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Wiktionary and Wolne Lektury free for commercial use?

Wiktionary allows commercial use on its free tier, and Wolne Lektury 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.