QuillBot
AI Writing & Content
Free Plan Available
Writing assistant for paraphrasing, grammar checks, summarizing and AI detection, available on the web, desktop and mobile.
Best for: Students and writers rewording, proofreading and summarizing text
Grammarly
AI Writing & Content
Free Plan Available
AI writing assistant that checks grammar, tone and clarity and offers rewrites across the apps and browsers you already write in.
Last reviewed 11/1/2026
Overview
Grammarly reviews your writing as you type, flagging grammar and spelling issues, suggesting tone changes and generating rewrites with AI prompts. It works inside desktop apps, browsers, Microsoft Office and Google Docs, and suits individuals as well as teams that want shared style guides and brand tones.
Best For
Polishing everyday writing, emails and documents with AI help
Key Features
- Spelling, grammar and tone checks
- Full-sentence rewrites and tone adjustment (Pro)
- Plagiarism and AI-generated text detection (Pro)
- AI prompts: 100/month free, 2,000 per member/month on Pro
- Team style guide, brand tone, Snippets and analytics (Pro)
- SAML SSO, SCIM and BYOK encryption (Enterprise)
Pricing
$12/member/month billed annually (Pro); $30/member billed monthly Official pricing
Free plan: Available
Pros & Cons
Pros
- Permanent free tier with core grammar checks
- Works inside many existing writing apps
- Team style and brand tone controls on the entry paid plan
Cons
- Monthly billing ($30/member) costs much more than annual
- Free plan limited to 100 AI prompts per month
- SSO, SCIM and unlimited AI prompts require Enterprise
