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THE BUILDING BLOCKS

Language APIs

Browse language APIs by access requirements and source. Open a provider guide to compare authentication, documentation, and usage conditions before integrating.

14APIs to explore

Showing 1–14 of 14 APIs

Docs reviewed
Language

Datamuse

Find rhymes, related words, spelling matches, and autocomplete suggestions.

◇ No keyFree tier
Community listing
Language

Chinese Character Web

Chinese character definitions and pronunciations

◇ Reported: No keyCheck pricing
Community listing
Language

Chinese Text Project

Online open-access digital library for pre-modern Chinese texts

◇ Reported: No keyCheck pricing
Community listing
Language

Collins

Bilingual Dictionary and Thesaurus Data

Reported: API keyCheck pricing
Community listing
Language

Free Dictionary

Definitions, phonetics, pronounciations, parts of speech, examples, synonyms

◇ Reported: No keyCheck pricing
Community listing
Language

Lingua Robot

Word definitions, pronunciations, synonyms, antonyms and others

Reported: API keyCheck pricing
Community listing
Language

Merriam-Webster

Dictionary and Thesaurus Data

Reported: API keyCheck pricing
Community listing
Language

OwlBot

Definitions with example sentence and photo if available

Reported: API keyCheck pricing
Community listing
Language

Oxford

Dictionary Data

Reported: API keyCheck pricing
Community listing
Language

Synonyms

Synonyms, thesaurus and antonyms information for any given word

Reported: API keyCheck pricing
Community listing
Language

Wiktionary

Collaborative dictionary data

◇ Reported: No keyCheck pricing
Community listing
Language

Wordnik

Dictionary Data

Reported: API keyCheck pricing
Community listing
Language

Words

Definitions and synonyms for more than 150,000 words

Reported: API keyCheck pricing
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Know what’s been checked. Reviewed guides include provider documentation and examples. Community listings contain reported information that may have changed. Our methodology →