Wordtune

Wordtune is an AI writing companion by AI21 Labs that helps users rewrite, rephrase, and refine their text. Unlike tools that generate content from scratch, Wordtune focuses on improving existing writing by suggesting alternative phrasings, adjusting tone, expanding or shortening sentences, and fixing grammar. It also offers an AI reader that summarizes long documents, articles, and YouTube videos. Wordtune integrates as a browser extension and works across email, documents, and social media platforms.