Lex

What is Lex?

Lex is an AI-powered document editor for writers. It gives feedback on drafts, suggests inline edits and helps you get stuck passages moving again.

Key capabilities of Lex

• AI feedback on drafts: Comments on clarity, structure and tone as you write.
• Inline AI edits: Rewrites selected text inside the document.
• Model choice: Gives access to models including GPT-4.1 and Claude.
• Collaboration: Document sharing and teamwork are free.
• Lex Teams: Adds unlimited folder access for teams.
• Private hosting: Writing is hosted on Lex own database.

How Lex works

You write in a clean editor and call on the AI for feedback, rewrites or next-sentence help. Lex lets you switch between language models as new ones appear. Pro unlocks the higher-reasoning models, early features and the iOS app. The vendor states your writing is not used for AI training.

Who uses Lex?

Lex is used by writers, bloggers, essayists and anyone whose work goes through an edit process. Teams can share documents and use Lex Teams for shared folders.

Lex pricing

The vendor pricing page confirms a Pro tier but does not show amounts in the version reviewed. Third-party sources report Lex Pro at about $12 per month billed annually or $18 month to month, and one source reports higher figures. Confirm on the vendor site.

Lex alternatives

Alternatives include Paperpal, which targets academic writing, Trinka, which focuses on grammar for technical text, and GPTZero, which detects AI-written text rather than helping you write.