QuillBot
QuillBot is an AI-powered writing assistant that paraphrases, summarizes, checks grammar, and refines text across web, browser extensions, and integrations.
What is QuillBot?
QuillBot is a widely used AI writing platform centered on paraphrasing, grammar checking, and summarizing, accessible via its website, browser extensions, and integrations with tools like Google Docs and Microsoft Word. Originally a standalone startup, it was acquired by Learneo (formerly Course Hero) and is popular among students, academics, and everyday writers. It focuses on refining existing text rather than generating long-form content from scratch.
Best known for: One of the most popular AI paraphrasing and rewriting tools online.
Key features
- Paraphrasing tool with multiple rewriting modes
- Grammar and spelling checker
- Summarizer for condensing long text
- Plagiarism detection (Premium)
- Browser extensions and Google Docs / MS Word add-ins
- Co-Writer and citation/translation utilities
Who QuillBot is best for
- Students and academics rewriting and polishing essays
- Non-native English writers improving clarity and fluency
- Content writers and marketers speeding up editing
Ideal team: Solo writers, students, and small content teams who need affordable, fast paraphrasing and grammar help rather than a full AI content-generation suite.
QuillBot pricing
Free
$0
- Paraphraser with a word-count limit per operation
- Basic grammar checker and summarizer
- Limited paraphrasing modes and synonym control
Premium (Annual)
$8/per user / mo
- Unlimited paraphrasing word count
- All paraphrasing modes and full synonym slider
- Tone detection, plagiarism checks, and faster processing
Premium (Monthly)
$20/per user / mo
- Same full Premium feature set
- No annual commitment
- Higher effective cost than annual billing
Teams
Custom
- Centralized billing and seat management
- Volume pricing for organizations
- Admin controls for multiple users
Costs to watch before you commit
- Advertised low monthly rate requires paying for a full year upfront; month-to-month is roughly double
- Free plan caps paraphrase word count and limits modes, pushing heavy users to Premium
- Plagiarism checker has a monthly page limit even on Premium
- Team pricing is quote-based, so per-seat cost scales with headcount
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