Lex

Lex is a word processor with built in AI editing tools, aimed at writers who want a minimal interface. Documents support comments, version history, live collaboration through a shared link, and read only publishing links. The site lists track changes as coming soon, and Lex works on mobile web without an app download. The AI features include asking for feedback on a draft, brainstorming, rewriting any passage, one click title ideas, and command shortcuts for tasks such as finding a better word or generating a list of ideas. The vendor says paid plans give access to leading models, naming GPT 4.1 and Claude 4 Opus and Sonnet, and that Lex uses models from OpenAI, Anthropic and TogetherAI through enterprise APIs. It states that user writing is not used to train models and that it has no plans to train its own. Lex suits writers working on drafts that go through an editing process, such as articles, essays, fiction and important emails. Sharing and collaborating on documents is free, and a Lex Teams add on supports unlimited group use of folders. Lex is no longer accepting new customers. Existing accounts continue to work as usual. Pricing for the Lex Pro subscription is shown only to logged in existing users.