Feature-by-feature
Where each writing tool wins.
Use this section to decide quickly based on whether you need polishing, rewriting, grammar help, citations, plagiarism checks, or AI writing support.
Category
Grammarly
QuillBot
Winner
Grammar and clarityEveryday writing feedback
Strong real-time grammar, clarity, tone, rewriting, and professional writing feedback across many writing contexts.
Includes grammar checking, but its strongest identity is paraphrasing, rewriting, summarizing, and text transformation.
Grammarly
ParaphrasingRewriting sentences and paragraphs
Helpful rewrites and clarity suggestions, especially inside broader writing assistance.
Dedicated paraphraser with modes, synonym control, freeze words, and rewriting-focused workflow.
QuillBot
Plagiarism checksOriginality support
Offers plagiarism checking alongside writing assistance and academic integrity support.
Premium includes plagiarism checking alongside paraphrasing, grammar checker, AI detector, and summarizer tools.
Tie
AI detectorAI-use review
Offers AI detection designed as a transparency tool, with the important limitation that no detector is perfect.
Includes AI detector tools as part of its broader writing and rewriting suite.
Tie
Citations and academic writingStudent support
Strong for improving writing quality and checking clarity, tone, and originality.
Strong for students who need paraphrasing, summarizing, citation generation, grammar checking, and plagiarism review.
QuillBot
Best business fitWorkplace writing
Best for emails, reports, proposals, customer messages, brand voice, and team communication.
Useful for rewriting and repurposing, but less complete as a workplace writing assistant.
Grammarly