Quillbot vs Grammarly

QuillBot and Grammarly are both AI writing tools, but they specialize in different aspects of the writing process. QuillBot is known for paraphrasing, while Grammarly covers the full writing quality spectrum.

Overview

QuillBot is an AI writing tool best known for its paraphrasing engine. It rewrites text in multiple modes (standard, fluency, formal, creative, etc.), and also offers grammar checking, summarization, citation generation, and plagiarism detection. Grammarly is the leading AI writing assistant covering grammar, spelling, punctuation, style, tone, and clarity. It works across all writing contexts with browser extensions, desktop apps, and mobile keyboards.

Key Differences

Paraphrasing: QuillBot's core strength is paraphrasing with seven rewriting modes. Each mode produces a different style of rewrite — from minimal corrections to complete restructuring. Grammarly offers sentence rewrites but paraphrasing is not its focus. Grammar checking: Grammarly is significantly better at grammar, spelling, and punctuation checking. Its suggestions are more accurate and contextual. QuillBot's grammar checker is adequate but less sophisticated. Integration breadth: Grammarly works everywhere — Chrome, Edge, Firefox, Safari, Word, Google Docs, Slack, email, mobile keyboards. QuillBot is more limited, primarily working through its web app and a Chrome/Word extension. Academic features: QuillBot includes citation generation (APA, MLA, Chicago) and a plagiarism checker, making it popular with students. Grammarly has a plagiarism checker on Premium but no citation generator. Summarization: QuillBot's summarizer condenses text effectively. Grammarly does not have a dedicated summarization feature. Tone detection: Grammarly excels at tone analysis and adjustment. QuillBot's modes change writing style but do not analyze or suggest tone.

Pricing

QuillBot offers a free tier and Premium at $10/month. Grammarly offers a free tier and Premium at $12/month. Both have student discounts.

Verdict

Choose Grammarly if you want the most comprehensive writing quality tool across all platforms. Choose QuillBot if paraphrasing, summarization, and citation generation are your primary needs, especially for academic writing.