Competitive Analysis

Word Orb vs Free Dictionary API

Free Dictionary API is free and basic. Word Orb is free and comprehensive.

FeatureWord OrbFree Dictionary API
Languages47 + native scriptEnglish (some others)
Educational Content162K words + structured daily lessons + 45K+ assessments -
API Response Time<50ms edge~200ms
Knowledge Graph30K+ connections -
Quizzes & Assessment45,916 assessments -
Structured Lessonsstructured daily lessons -
Pronunciation Audio240K hosted filesExternal links
SearchPrefix + fuzzy + definitionExact match only
Batch RequestsUp to 50 words -
PricingFree 500/day, from $29/moFree (no paid tier)
MCP Agent Support12 tools -
Why teams pick Word Orb
  • 162K words with consistent JSON - not scraped HTML with unpredictable schemas.
  • Self-hosted audio on R2 - no broken external links.
  • 47 languages, etymology, IPA, and age-calibrated definitions in every response.
  • Search, autocomplete, related words, word-of-the-day - all free.

Fair comparison: Free Dictionary API has zero cost with no rate limits and no signup required - great for quick prototypes.

K

Kelly powers the structured language layer behind Word Orb. That is why the product reads like a teaching system, not a scraped utility.

Use the playground, inspect the JSON, and decide based on the shape of the product rather than the pitch.

Open Playground