QuillBot
Free planai toolsAll-in-one AI writing toolkit with paraphrasing, grammar checking, plagiarism detection, and citation generation.
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QuillBot has grown into one of the most comprehensive free writing toolkits on the internet, serving over 35 million users globally. Its flagship paraphrasing tool offers multiple rewriting modes — from Standard and Fluency to Creative and Formal — giving users precise control over the final output. The integrated grammar checker catches errors in real time, while the plagiarism checker scans against billions of web pages to ensure originality. Students particularly benefit from the citation generator, which supports APA, MLA, Chicago, and other major formats automatically. A built-in summarizer condenses long documents into key points, and the Co-Writer combines all tools in one workspace. MS Word add-in and Chrome extension ensure QuillBot fits naturally into existing workflows. Premium users unlock unlimited paraphrasing length, faster processing, and access to advanced writing modes.
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⭐ User Reviews
QuillBot is my primary AI tool. The output quality on long-form content is excellent and the structured output features in the API are reliable. Occasionally verbose but that's easily prompted away.
QuillBot has become my daily co-pilot. The quality of reasoning on complex problems is genuinely impressive — it caught logical flaws in our product spec that I'd missed. The context window is large enough for real document work.
QuillBot replaced several specialized tools in our workflow. Content creation, summarization, competitive analysis — the quality is consistently high and it's rare to get hallucinations on factual topics.
QuillBot has become my daily co-pilot. The quality of reasoning on complex problems is genuinely impressive — it caught logical flaws in our product spec that I'd missed. The context window is large enough for real document work.
QuillBot has become my daily co-pilot. The quality of reasoning on complex problems is genuinely impressive — it caught logical flaws in our product spec that I'd missed. The context window is large enough for real document work.