Head to head
Free Dictionary vs Datamuse
Both are free words APIs. Both were called live on 23 Oct 2026. Here is what actually differs — and which one you should pick.
Free Dictionary
Definitions, phonetics, synonyms and audio for English words. No key, beautifully simple.
Status⚠️ Down at last check
Health scoreF · 34/100
Needs a key?No — call it now
Browser CORSYes
Response time313 ms (our check)
ReliabilityLive in 1 of last 2 weekly checks (50%)
Free limitsFree, no key
CategoryBooks, Words & Learning
VS
Datamuse 👑
A word-finding engine — rhymes, synonyms, 'sounds like' and 'means like' queries for writers and games.
Status✅ Live-verified 23 Oct 2026
Health scoreA · 90/100
Needs a key?No — call it now
Browser CORSYes
Response time730 ms (our check)
ReliabilityLive in 2 of last 2 weekly checks (100%)
Free limitsFree: 100k req/day
CategoryBooks, Words & Learning
⚖️ The verdict
Different jobs: Free Dictionary defines words properly (meanings, phonetics, audio). Datamuse finds words (rhymes, "means like"). A word game wants Datamuse; a dictionary app wants Free Dictionary.