Wordtune is an AI-powered writing assistant developed by AI21 Labs that helps users rewrite, rephrase, and improve their text in real time. Founded in 2018 by Ori Goshen, Yoav Shoham, and Amnon Shashua, AI21 Labs is headquartered in Tel Aviv, Israel, and Wordtune was launched as the company's consumer-facing product. The platform uses large language models to understand the meaning and context of written text, offering intelligent suggestions for rephrasing sentences, adjusting tone, shortening or expanding content, and improving clarity and readability. Wordtune's core rewriting features include options to make text more casual or formal, shorten verbose sentences, expand brief statements into more detailed explanations, and generate alternative phrasings that convey the same meaning with different word choices. The platform includes Wordtune Read, a feature designed for processing long documents, articles, and PDFs by generating AI summaries and allowing users to ask questions about the content to extract specific information quickly. Wordtune also offers Wordtune Editor, a full writing workspace where users can draft content from scratch with AI assistance, generate text continuations, and get real-time suggestions as they type. The platform provides grammar and spelling correction alongside its rewriting capabilities. Wordtune Spices is a feature that generates creative additions to text, including statistical facts, analogies, examples, and counterarguments to strengthen writing. The platform is available as a browser extension for Chrome and Edge, as well as integrations with popular writing environments. Wordtune operates on a freemium model with a free plan that provides limited rewrites per day. The Plus plan costs approximately $13.99 per month and includes unlimited rewrites, Wordtune Read access with higher document limits, and premium rewriting features. Business and Enterprise plans are available for teams requiring collaboration tools, admin controls, and dedicated support.

AI Grammar Checkers

Wordtune includes grammar and spelling correction capabilities alongside its rewriting features, identifying and fixing errors in real time as users write. The tool provides contextual grammar suggestions that go beyond simple rule-based checking, using AI to understand sentence meaning and suggest corrections that improve both accuracy and readability.

AI Paraphrasers

Wordtune is an AI paraphrasing tool that uses large language models to generate intelligent sentence rewrites while preserving the original meaning. Users can adjust rephrasing toward casual or formal tones, shorten or expand text, and receive multiple alternative phrasings for any selected sentence, making it one of the most context-aware paraphrasing tools available.

AI Summarizers

Wordtune Read enables users to process long documents, articles, and PDFs by generating AI-powered summaries and allowing natural language questions about the content. This feature is designed for research workflows where users need to quickly extract key information from lengthy materials without reading every word.

AI Writing Tools

Wordtune provides comprehensive AI writing assistance through its Editor workspace, where users can draft content with AI-powered text continuation, real-time rewriting suggestions, grammar correction, and Spices that generate supporting facts, analogies, and examples. The platform supports the entire writing process from initial drafting through final polishing.