Your complete writing solution
Grade: C — Score: 63/100
QuillBot utilizes advanced AI technology to assist users in crafting clear, polished, and professional writing. Its suite includes tools for paraphrasing, grammar checking, and tone analysis, making it a versatile solution for various writing needs.
The platform streamlines the writing workflow by providing features like summarization, translation, and citation generation, allowing users to focus on content creation without getting bogged down by technical details. With integrations available for popular browsers and applications, QuillBot fits seamlessly into existing workflows.
However, users should be aware of potential risks associated with AI-generated content, including the importance of originality and the need for proper citation. QuillBot addresses these concerns with its plagiarism checker and AI detector, ensuring that users maintain their credibility while leveraging AI tools.
Free: $0/month
Premium (Monthly): $19.95/month
Premium (Annual): $8.33/month ($99.95 billed annually)
Teams (2–10 seats): $7.50/user/month (billed annually at $89.95/seat)
Teams (11–50 seats): $6.66/user/month (billed annually at $79.95/seat)
Teams (51+ seats): $5.83/user/month (billed annually at $69.95/seat)
Consider switching to Grammarly: Grammarly offers similar writing enhancement features with a focus on grammar and style.
QuillBot and Grammarly serve different primary functions. QuillBot is built around paraphrasing with 9 dedicated rewriting modes (Standard, Fluency, Formal, Academic, Creative, Simple, Expand, Shorten, and Custom), while Grammarly's core strength is deep grammar correction, tone detection, and style analysis — it does not offer a comparable standalone paraphrasing engine. QuillBot Premium at $8.33/month (annual) is significantly cheaper than Grammarly Premium at approximately $12/month (annual). QuillBot also includes a Summarizer, Citation Generator (APA/MLA/Chicago), and AI Humanizer that Grammarly lacks, but Grammarly provides more granular explanations for grammar corrections and a dedicated tone detector that QuillBot does not match.
By default, yes — QuillBot stores text inputs and uses them for model training for individual (non-Team) users, with the ability to opt out. Following the November 2025 privacy policy update, text input storage is enabled by default for all users, and account holders can separately opt out of (1) storing text inputs and (2) using inputs for AI model training via the Data and Privacy settings. Team Plan users are explicitly excluded from AI model training by default. QuillBot also states it does not allow any third-party service provider to use customer data for training their own AI models.
Yes, Turnitin's AI detection algorithms can identify patterns in QuillBot-paraphrased text, especially when the source material was AI-generated. Multiple independent tests show Turnitin flagging QuillBot-processed content at rates of 64% or higher for AI-origin detection. QuillBot is designed as a legitimate writing refinement tool — its Paraphraser, Grammar Checker, and Plagiarism Checker (25,000 words/month on Premium) are built to help users improve their own writing and properly cite sources, not to circumvent plagiarism detection systems.
QuillBot's free plan caps the Paraphraser at 125 words per input with only 2 modes (Standard and Fluency), the Summarizer at 1,200 words, and excludes the Plagiarism Checker entirely. Premium removes all paraphrasing word limits, unlocks all 9 modes, extends the Summarizer to 6,000 words, and adds 25,000 words/month of plagiarism scanning. The AI Humanizer is Premium-only in its Advanced mode. Free users still get unlimited access to the Citation Generator, AI Detector (with some limits), and Translator.
Yes, QuillBot offers a Chrome extension (rated 4.7/5 on the Chrome Web Store) that works directly inside Google Docs, Gmail, and other web-based editors without tab-switching. A dedicated Microsoft Word add-in is also available. Additional extensions exist for Edge and Safari browsers, and native desktop apps are available for both macOS and Windows. All extensions and apps provide the same core feature set — paraphrasing, grammar checking, and tone analysis — inline within your existing workflow.
The AI Humanizer is a specialized Premium-only mode that specifically targets detectable AI patterns in text, rewriting content to sound more naturally human-written. Standard Paraphraser modes like Fluency, Formal, or Creative focus on general tone and style adjustments — they change phrasing, vocabulary level, or conciseness but are not specifically calibrated to reduce AI detection scores. The Humanizer is designed for users who have used AI tools during their drafting process and want the final output to read more authentically. A basic version of the Humanizer is available on the free plan, but the advanced mode requires Premium.
QuillBot's Team Plan starts at $7.50/user/month for 2–10 seats (billed annually), with volume discounts dropping to $6.66/user/month for 11–50 seats and $5.83/user/month for 51+ seats. Team features include writer-management dashboards, centralized billing, and shared style guides for consistent communication. Critically, Team Plan users' text inputs are excluded from AI model training by default — a meaningful data privacy advantage for organizations handling sensitive content. However, QuillBot does not advertise SOC 2 certification, enterprise SSO, or dedicated SLA-backed support, which may be requirements for larger regulated organizations.
QuillBot's language support varies by tool. The Translator handles over 45 languages for text translation even on the free plan. The Paraphraser supports paraphrasing in over 25 languages in Premium. The Grammar Checker works in 6 languages (English, German, French, Portuguese, Spanish, and Italian). The Plagiarism Checker scans content in over 100 languages. This multi-language coverage makes QuillBot particularly useful for ESL/ELL writers and multilingual professionals, though the deepest feature set — especially advanced grammar recommendations and all paraphrasing modes — remains strongest in English.