Dictionaries · head-to-head
Lingua Robot vs Oxford
Lingua Robot is a RapidAPI-hosted REST dictionary covering more than 800,000 English lexical entries — words, phrasal verbs, and multiword expressions — with definitions, pronunciations, and morpheme/lemma data returned as JSON, documented on a separate Apiary reference site rather than its own marketing homepage. A live unauthenticated request against its real RapidAPI proxy host returned a reflected `access-control-allow-origin` header plus `access-control-allow-credentials: true`, reconfirming CORS; its free Basic tier covers 2,500 requests/day (then $0.004 each), with paid Pro/Ultra/Mega plans ($10-$99/month) raising the daily ceiling.
Oxford Dictionaries API (Oxford Languages) exposes definitions, translations, and lexical metadata sourced from Oxford University Press's own databases across dozens of languages, authenticated with an app ID/key pair from its developer portal. New accounts start on a free Sandbox tier that emulates the live API for evaluation before moving to paid production plans, with custom Enterprise licensing available from an annual per-language fee.
| Lingua Robot | Oxford | |
|---|---|---|
| Authentication | API Key | API Key |
| Pricing | freemium | freemium |
| Formats | JSON | JSON |
| CORS | yes | no |
| HTTPS | Yes | Yes |
Lingua Robot supports CORS, while Oxford doesn't — pick Lingua Robot for direct browser calls.