Lex

What it does

Lex is a collaborative document editor with AI editing tools. It offers AI feedback, comments, versions, live collaboration, and publishing read-only links. The service is no longer accepting new customers, but existing accounts keep working.

Lex is a writing environment that puts AI help inside a document instead of a separate chat window. You can ask for feedback, get title ideas, rewrite passages, and share a link so others can read or edit. The homepage says it is loved by over 300,000 writers. The company states it is no longer accepting new customers, and existing accounts will keep working as usual. Pricing information is for existing users only and requires login to view. Track Changes is marked coming soon. The pricing page says Lex uses models from OpenAI, Anthropic, and TogetherAI through their enterprise APIs, and that writing is not used to train AI models. It also says sharing and collaborating on documents is free, and Lex Pro adds access to bigger AI models, early features, the iOS app, and priority support. A free trial is mentioned only as something you can ask for by replying, so it is not a standard free plan.