AI Tool Comparison
Comparing as AI Grammar & Proofreading ToolsGrammarly vs QuillBot
Grammarly
VS
QuillBot
Verdict by Category
Detailed Comparison
Feature
Grammarly
QuillBot
Pricing
FreemiumGrammarly's Free plan is available at no cost and includes mistake-free writing, tone detection, and 100 AI text generation prompts per month — suitable for individuals with basic needs.
The Pro plan costs $12/member/month billed annually ($30/month when billed monthly) and adds full-sentence rewrites, tone adjustments, brand voice customization, style guide adherence, and 2,000 AI prompts per month.
Enterprise plans are available through Superhuman Go with unlimited members, proactive AI across all apps and tabs, confidential mode, data loss prevention, granular roles and permissions, and dedicated support. Organizations report saving an average of $5,000 per employee per year.
FreemiumQuillBot's free plan provides access to the paraphraser (up to 125 words per use), summarizer, grammar checker, AI chat, plagiarism checker (limited), and citation generator — making it genuinely useful for casual writing tasks at no cost.
Premium plans unlock unlimited paraphrasing in all 8 modes, unlimited grammar checking, advanced plagiarism detection, faster processing, and priority access. Premium pricing is approximately $9.95/month (monthly) or around $4.17/month when billed annually.
Team and institutional plans are available for organizations and academic partnerships, with volume pricing and dedicated support.
Categories
AI Writing Assistant ToolsAI Productivity ToolsAI Copywriting Tools
AI Writing Assistant ToolsAI Productivity ToolsAI Research & Education ToolsAI Search Engines
Summary
AI writing assistant for real-time grammar, clarity, tone, and style — works everywhere you write
AI writing suite for paraphrasing, summarizing, grammar checking, and citation — trusted by 35M+ writers
Grammarly Pros & Cons
Pros
- Works across every app and browser — not just a standalone editor
- Trusted by 40M+ users and 50K+ organizations worldwide
- Tone and clarity suggestions go well beyond basic spell-check
- Free plan is genuinely useful with no credit card required
- Enterprise features include DLP, SSO, and brand style guides
- Integrates natively with Google Docs, Outlook, and Slack
Cons
- Pro plan can be expensive at $30/month when billed monthly
- AI generation prompts are limited even on Pro (2,000/month)
- Suggestions can sometimes feel overly prescriptive for creative writing
- Desktop app required for full cross-app functionality
- No long-form AI document drafting like dedicated writing tools
QuillBot Pros & Cons
Pros
- Trusted by 35M+ users across 180 countries — proven at massive scale
- Paraphraser covers 8 distinct modes for every writing context
- Free plan is genuinely useful with no payment required
- Chrome extension works everywhere including Google Docs and Gmail
- Academic-grade citation generator for APA, MLA, Chicago
- Available on iOS, Android, Windows, macOS, Word, and Chrome
Cons
- Free plan limits paraphraser to 125 words per use
- Paraphrasing can sometimes reduce stylistic nuance
- Not designed for long-form content generation or full drafts
- AI Detector accuracy not as high as specialized detection tools
- Premium pricing can seem high compared to free alternatives