QuillBot

What is QuillBot?

QuillBot is an AI writing assistant best known for paraphrasing, but it also offers grammar checking, summarization, translation, and a citation tool. The core of the tool is the paraphraser, which rewrites a given text in different modes — from "Standard" and "Fluency" to more creative or more formal variants. This lets you smooth out text, simplify it, or shift its tone without rewriting it from scratch. QuillBot is available as a web app, browser extension, and Word add-in, and supports several languages beyond English, including German. For a direct comparison, see QuillBot vs. Grammarly and DeepL vs. QuillBot.

QuillBot: Strengths and weaknesses

QuillBot's strength is clearly paraphrasing: the various modes produce usable rewrites, and the built-in synonym slider lets you control how heavily the text is changed. Combined with grammar checking, summarization, and a citation generator, the tool covers a large part of the academic and everyday writing workflow. The plagiarism checker in the paid plans is a useful extra for students, and an API is available for developers.

Weaknesses: in the free tier, the word count per paraphrase and the available modes are noticeably limited. Depending on the mode, the rewrites can sound somewhat mechanical and should be proofread. If you need pure translation rather than rephrasing, a dedicated translator is the better choice.

Pricing and plans

QuillBot offers a permanently free tier that includes paraphrasing with a limited word count and a selection of modes, plus a basic grammar check. Premium starts at around $8 per month (billed annually; shorter terms cost more) and removes the word limits, unlocking all paraphrasing modes, faster processing, the full synonym slider, and the plagiarism checker. Team options for multiple users are also available. You'll find current terms on the QuillBot tool page and the official website.

Who is QuillBot for?

QuillBot is especially well-suited to students, researchers, and anyone who wants to rephrase, simplify, or summarize existing text — for example to avoid word repetition or to paraphrase sources cleanly. It's also helpful for non-native speakers who want to improve their phrasing. If, on the other hand, you want to generate text from scratch, an AI copywriter like Writesonic is the better fit; for correcting English text with deep Office integration, Grammarly is the obvious alternative.