QuillBot is an AI-based writing tool suite that includes the paraphraser, grammar checker, summarizer, plagiarism detector, AI Humanizer, AI detector, citation generator, and Flow – the complete writing editor. The free version never expires and there are no limitations there. Subscription to Premium plan eliminates any restrictions on usage of the service.
The free version of QuillBot gives access to the paraphraser (the limit of words per usage is 125 and two modes – Standard and Fluency), basic suggestions of grammar checker, summarizer of texts up to 1,200 words, AI Detector without word limit, limited daily access to Humanizer and a co-writer feature. It is suitable for quick rewrites and basic grammar check but it turns out to be a limitation for something larger.
With the subscription to Premium you get unlimited paraphrasing (there are nine modes of paraphrasing plus unlimited custom modes and advanced suggestions), twenty pages/month of plagiarism checking, full access to Humanizer, citation generator and priority processing. This is the only way to upgrade – there is no "tier 2" or "tier 3". All premium features are included in one Premium plan.
$19.95/month with monthly billing, $13.31/month with semi-annual payment ($79.86 every six months), $8.33/month with annual billing ($99.95/year). Also, QuillBot often runs promotional annual price starting at $4.17/month or $49.95/year. With student email, the student plan costs $6.25/month annually.
There is no free trial of Premium plan at QuillBot but there is free plan for testing all features with limits. With Premium plan you get a 3-day money-back guarantee since the moment of purchase. If after three days you are not satisfied with the subscription, no refunds are provided afterwards.
The discounted annual price with student email (roughly $6.25/month billed yearly) is available only with annual subscription – not with monthly or semi-annual billing. The verification is done during checkout process.
The service is available in QuillBot editor website, Chrome extension, and integrated directly to Google Docs and Microsoft Word. So with the Chrome extension you can use all features of QuillBot directly while you are working with some text without copying and pasting it.
The plagiarism checker is available only with Premium subscription and its limit is 20 pages per month. It checks texts against internet sources and academic databases. One "page" contains about 250 words. For extensive checking of plagiarism (e.g. dissertation or report), 20 pages per month might not be enough.
No, it does not have free trial but there is free plan available permanently and it allows you to try all features with limits. There is no limited trial of Premium plan but you have a 3-day money back guarantee.
It is good for quick rephrasing of short paragraphs and grammar checking. But for essays, the 125-word limit of paraphrasing turns into a big problem and forces to split the text into small pieces – this is boring and time-consuming task. Usually, students who regularly use the tool, buy the subscription.
It performs good in tests but no tool can provide you 100% guarantee to bypass every AI detector. There will be variations of results depending on the input text and AI detector used as well as depending on the use of AI patterns in content. This feature should be used just as a rewriting aid, not guaranteed solution.
The account will be downgraded to the free version and you will lose access to such features as unlimited paraphrasing, plagiarism checker, and full access to Humanizer. You keep all saved works.
The grammar checker works in six languages, but the paraphraser and other tools are only in English. Translation functions are available to translate between languages, but the main rewriting and humanizing functions are designed for English texts.
They overlap on grammar checking function but they have other main functions. The paraphrasing, AI humanizing, and rewriting is the strong point of QuillBot. Real-time grammar, style, and tone correction is the strong point of Grammarly. Users often use both programs at once – Grammarly for polishing and QuillBot for restructuring.
No, you cannot. The refund policy of QuillBot is strictly 3-day window from the moment of purchase. After this period of time, the subscriptions are auto-renewed with no partial refunds. Cancel the auto-renewal of the subscription in the account settings to prevent the next charge.