Lexio AI contextual definition solutions
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Click any word

After analyzing your text, tap any word to see its precise meaning in context.

About
Contextual understanding

Read deeper.
Understand everything.

Lexio gives you the precise meaning of any word in context — not a dictionary definition, but what it actually means in the sentence you're reading.

See how it works
How it works
1

Paste any text

Drop in a paragraph from an article, book, email, or anything else — any language works.

2

Analyze it

Lexio reads the full context and prepares every word for instant lookup. Takes about a second.

3

Click any word

Tap a word to see its exact meaning in that sentence, where it comes from, and how to say it.

Everything you need to understand

Contextual definitions

Not what the word means in general — what it means right here, in this sentence, the way this author used it.

16 languages

Paste text in Spanish, French, German, Russian, Japanese, and more. Get definitions in whatever language you prefer.

IPA pronunciation

See the phonetic transcription of every word and hear it spoken aloud with a single tap.

Etymology

Understand where words come from. Knowing a word's roots makes it stick — and makes the next related word easier.

Word bank

Save words you want to remember. Your personal vocabulary list, always one click away.

4 AI models

Switch between Claude Haiku, GPT-4o Mini, Gemini 2.5 Flash, and Claude Sonnet 4.5 — each brings a different depth of analysis.

Four models. One seamless switch.

Every model runs the same prompt — pick the one that fits how deep you want to go.

Anthropic Fastest

Claude Haiku

Lightweight and near-instant. Ideal for rapid lookups when you just need the meaning without waiting.

  • ~1 s response time
  • Concise, accurate definitions
  • Best for high-frequency use
OpenAI Balanced

GPT-4o Mini

OpenAI's efficient mid-tier model. Strong at precise contextual reasoning and nuanced language understanding.

  • Sharp contextual grasp
  • Reliable, consistent output
  • Good multilingual accuracy
Google Multilingual

Gemini 2.5 Flash

Google's latest model excels across languages and brings broad world knowledge to every definition.

  • Widest language coverage
  • Rich cultural context
  • Fast with long passages
Anthropic Most thorough

Claude Sonnet 4.5

The deepest thinker. Richer etymologies, more precise "why this word" explanations, and literary-grade register analysis.

  • Deepest contextual analysis
  • Best etymology & register
  • Preferred for serious reading
✦ Default model
Chrome Extension — Beta

Look up words without
leaving the page.

Select any word or sentence on any website. Lexio appears instantly with the meaning in context — no copy-paste, no tab switching.

Free · Works on any page · No account required
Mac App

Always at hand,
wherever you read.

The Lexio Mac app lives in your menu bar or dock, so you can look up words without switching to your browser.

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