QuillBot vs Wordtune: pricing, features and which to choose

QuillBot is an AI-powered writing companion founded in 2017 by University of Illinois computer science students Rohan Gupta, Anil Jason, and David Silin. Learneo, formerly Course Hero, acquired QuillBot in September 2021, and Gupta leads Learneo’s writing vertical. Learneo’s leadership page describes QuillBot as having more than 30 million monthly active users. The product has grown from its original writing-improvement focus into a suite covering paraphrasing, grammar checking, translation, summarization, citation generation, plagiarism checking, AI detection, AI chat, AI humanization, and image generation. Its core audience includes students, language learners, researchers, professionals, and other writers who want assistance revising or understanding text. It remains a writing service rather than a general-purpose publishing application.

A typical QuillBot workflow begins with text entered or uploaded through its web tools, browser extensions, desktop app, or mobile experience. Users can paraphrase text in more than 10 modes, including Academic and Simple, adjust synonym use, check grammar, summarize documents, translate between languages, or generate citations. The AI Detector analyzes text for patterns associated with AI writing and returns a percentage estimate, while Premium users can download full reports. The service also lists plagiarism checking, AI Humanizer, AI Chat, and AI Image Generator among its tools. These functions operate as connected but distinct writing utilities. Users should review every rewrite for meaning, source accuracy, citation completeness, and appropriate attribution before submitting or publishing the result.

QuillBot’s main caveat is that rewriting can alter nuance, while AI detection cannot establish authorship. Its privacy materials say inputs and usage data may support service improvement and personalization. For browser extensions version 4.37.0 or later, text storage is on by default, with controls to opt out of storage and model training; Team inputs are excluded from training by default. LanguageTool, Grammarly, and Wordtune are direct alternatives for writing assistance, with LanguageTool a close fit for multilingual correction and Grammarly a close fit for broad workplace writing. These are editorial fit comparisons, not claims about identical features. Pick QuillBot if paraphrasing, translation, citations, and study-oriented writing tools matter more than continuous workplace correction.

Wordtune is an AI writing assistant made by AI21 Labs Ltd, launched in 2020 as a browser extension. It later added summarization, mobile access, whole paragraph generation, and a dedicated web editor for longer work. The product remains accessible, but Israeli reporting in April 2025 said AI21 halted Wordtune development and left it in maintenance mode while shifting attention toward enterprise and business products. That distinction matters for buyers because Wordtune still covers rewriting and summarization, while its product direction appears less active than its feature set. AI21 remains the current owner as of October 22, 2026. No public user or funding total is attached to Wordtune itself, so its scale cannot be quantified from published company details.

Wordtune covers the common editing loop from rough sentence to finished passage. In the web editor, users can rewrite text, change tone, expand or shorten passages, correct grammar and spelling, summarize documents, ask AI questions, generate ideas, and continue writing from context. Its browser extension places inline suggestions inside text boxes and supports Gmail, Google Docs, Slack, and social or web applications. Users can work through Chrome, Edge, Firefox, Arc, or the iPhone app. Wordtune supports English rewriting and translation input from Spanish, Mandarin, Arabic, Hindi, Korean, Hebrew, Russian, German, French, and Portuguese into English. The workflow suits paragraph revisions, email polishing, and quick alternatives more than autonomous long form authorship.

Wordtune is strongest when the job is producing contextual phrasings, adjusting tone, or reshaping a paragraph inside the writing surface. Its maintenance mode reporting may concern buyers seeking active feature development, a published consumer model roadmap, self hosting, or a broad proofreading suite. QuillBot offers explicit paraphrasing modes such as Academic, Formal, Simple, Expand, and Shorten. ProWritingAid is another writing focused alternative with deeper style reports. Sudowrite, Novelcrafter, NovelAI, and Squibler are relevant writing alternatives with different documented scopes. Pick Wordtune for contextual rewriting and tone alternatives at a low annual entry price, provided its current development status fits your needs.