Lexio AI contextual definition solutions
Text
✦ Paste your text here, then click Analyze text
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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.

Lexio Pro

Read without limits

The free plan gets you started. Pro removes every cap and unlocks all four AI models.

Free
$0 /month
  • 30 word lookups / month
  • 3 OCR scans / month
  • Claude Haiku model
  • Re-request definition up to 5×
  • GPT-4o Mini, Gemini, Sonnet
  • Word bank sync across devices
Use for free
Pro
$2.99 /month
  • Unlimited word lookups
  • Unlimited OCR scans
  • All 4 AI models
  • Word bank sync across devices
  • Priority support

Instant activation · cancel any time

Features

Contextual definitions

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

11 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.

Anthropic Fastest

Claude Haiku

Near-instant lookups. Concise and accurate — best for high-frequency reading.

Default model
OpenAI Balanced

GPT-4o Mini

Sharp contextual reasoning with reliable multilingual accuracy.

Google Multilingual

Gemini 2.5 Flash

Widest language coverage and rich cultural context across definitions.

Anthropic Most thorough

Claude Sonnet 4.5

Deepest analysis — richer etymologies, literary-grade register, and precise "why this word" explanations.

What readers are saying

"I read a lot of dense non-fiction and kept a dictionary tab open constantly. Lexio replaced that entirely — I just click the word and the meaning appears right in context. It actually understands what the author meant."

A
Alex R.
PhD student, philosophy

"English is my third language and literary vocabulary was always a wall for me. Lexio doesn't just give me a definition — it tells me the tone and register of the word, which is exactly what I was missing."

S
Sofia M.
Translator, Berlin

"Our book club uses Lexio to prep before meetings. Instead of everyone arriving with different interpretations of the same passage, we actually discuss the ideas. The etymology feature alone has sparked so many conversations."

J
James O.
Book club organiser, London

Frequently asked questions

Yes. The free plan gives you 30 word lookups and 3 image scans per month — no credit card required. Pro ($2.99/month) removes all limits and unlocks every AI model.

Yes — the extension works on any page in Chrome. Select a word or phrase, right-click and choose "Define with Lexio", or use the keyboard shortcut. It works on news sites, PDFs opened in Chrome, academic papers, and more.

Only the word you look up and a short surrounding context window are sent to the AI provider. The full text you paste is never stored on our servers. See our Privacy Policy for full details.

Claude Haiku is the free default — fast and accurate for everyday reading. If you're on Pro and reading literature, legal texts, or academic prose, Claude Sonnet 4.5 gives the deepest analysis. GPT-4o Mini and Gemini are great middle options.

You can paste text in any language — English, Spanish, French, German, Dutch, Russian, Japanese, Chinese, Arabic, Portuguese, and Italian. Definitions can be returned in any of those languages too.

Yes, cancel any time from your account settings. You keep Pro access until the end of the billing period, then automatically move to the free tier.

Chrome Extension

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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Feedback

We'd love to hear from you.

Have a suggestion, found a bug, or just want to say hi? Reach out directly — we read everything.

matveylgnv2021@gmail.com +31 651 251 748