Rephrase AI is an online tool that uses artificial intelligence to paraphrase and rewrite text. Its primary function is to assist users in rephrasing sentences, paragraphs, emails, and drafts to achieve goals such as improved clarity, formality, conciseness, or readability while maintaining the original meaning. The tool is designed for a broad audience of writers, students, and professionals. The application provides a set of features for text adjustment. Users can select a specific objective for their rewrite, including making the text more formal, more concise, or easier to read. A SuperRephrase mode is available, along with controls for tone and style. The service operates on a freemium model. The free tier includes three standard rephrases per month with a character limit of 3,000 per rephrase. The paid subscription offers unlimited rephrases, a character limit of 10,000, unlimited access to SuperRephrase mode, and priority support. Typical use cases include reworking dense academic paragraphs, adjusting the tone of professional correspondence, shortening lengthy explanations, and finding appropriate wording for specific contexts. The workflow generally involves pasting a passage into the tool, selecting the desired adjustment, and reviewing the rewritten output. Additional tools are available for summarizing text and scanning for AI signals.