Overview

Lex is a collaborative document editor where the AI assistant works directly with the draft. It can discuss the text, suggest rewrites, provide broad feedback or run line-level checks.

Style guides and knowledge bases supply reusable context for maintaining a voice or referencing established information. Comments, folders and sharing support both individual writing and team workflows.

The free account applies AI usage limits, while Lex Pro provides access to more capable models. A simple developer API is documented; the product remains primarily web-based and English-language.

Key features

Discusses the draft and proposes changes inside the same editor.

Runs line-level checks to highlight passages that may need revision.

Uses style guides and knowledge bases as persistent context.

Manages comments, shared folders and a developer API.

Best use cases

Get a second opinion on an article, paper, important email or story.

Maintain a shared editorial voice across a team.

Build a collaborative publishing workflow with comments and shared folders.

Pros

Writers can accept or ignore suggestions without automatic replacement.

Style and knowledge context can be reused across multiple documents.