What is the difference between Grammarly and QuillBot?

Grammarly is best for Anyone wanting AI-powered writing improvement, while QuillBot is best for Students and writers wanting paraphrasing and grammar tools. Grammarly starts at Free and QuillBot starts at Free.

Is Grammarly or QuillBot cheaper?

Grammarly starts at Free with a free tier. QuillBot starts at Free with a free tier.

Is there a free alternative to QuillBot?

Both Grammarly and QuillBot offer free tiers.

Grammarly vs QuillBot (2026)

At a glance

	Grammarly	QuillBot
Best for	Anyone wanting AI-powered writing improvement	Students and writers wanting paraphrasing and grammar tools
Starting price	Free	Free
Free tier	✓	✓
Open source	—	—
Free tier available	✓	✓
Open source	—	—
Citations	—	✓
Clarity	✓	—
Grammar	✓	✓
Paraphrasing	—	✓
Plagiarism	✓	—
Summarizer	—	✓
Tone	✓	—

Grammarly

Strengths

Includes Grammar as a core feature, purpose-built for ai writing workflows
Includes Clarity as a core feature, purpose-built for ai writing workflows
Free basic grammar checks — generous enough for most small teams to get real work done
Established product with 17+ years on the market and a mature ecosystem

Weaknesses

Free plan exists but key features are locked behind the paid upgrade
Fewer built-in features means you may need additional tools to cover gaps
Ecosystem of third-party integrations is smaller than the market leaders in ai writing
Mobile experience lags behind the desktop version in features and polish

Try Grammarly → Full review

QuillBot

Strengths

Includes Paraphrasing as a core feature, purpose-built for ai writing workflows
Includes Grammar as a core feature, purpose-built for ai writing workflows
Free with 125-word limit — generous enough for most small teams to get real work done
Includes summarizer alongside the core feature set — fewer separate tools needed

Weaknesses

Free plan has meaningful restrictions: free with 125-word limit
Fewer built-in features means you may need additional tools to cover gaps
Ecosystem of third-party integrations is smaller than the market leaders in ai writing
Limited team/admin features if your organization eventually scales up

Try QuillBot → Full review

The bottom line

Pricing: Both tools offer free tiers, so you can test each before committing. Grammarly's free plan: Free basic grammar checks. QuillBot's free plan: Free with 125-word limit.

Feature gaps: Grammarly offers Clarity, Plagiarism and Tone that QuillBot lacks. QuillBot brings Citations, Paraphrasing and Summarizer that Grammarly does not have. Both share Grammar.

Team fit: Grammarly is geared toward any size teams, while QuillBot is aimed at individual users and small setups. Pick the one that matches where your team is today and where it is headed — migrating tools later is always painful.

Where each tool shines: Grammarly's biggest strengths are: includes grammar as a core feature, purpose-built for ai writing workflows. includes clarity as a core feature, purpose-built for ai writing workflows. QuillBot's biggest strengths are: includes paraphrasing as a core feature, purpose-built for ai writing workflows. includes grammar as a core feature, purpose-built for ai writing workflows.

Watch out for: With Grammarly, users commonly note that free plan exists but key features are locked behind the paid upgrade. With QuillBot, the main complaint is that free plan has meaningful restrictions: free with 125-word limit.

Choose Grammarly if...

You need a tool built for anyone wanting ai-powered writing improvement
You specifically need Clarity and Plagiarism
You care about includes clarity as a core feature, purpose-built for ai writing workflows
Your team size fits the any size profile Grammarly is designed for
The free tier works for you: free basic grammar checks

Choose QuillBot if...

You need a tool built for students and writers wanting paraphrasing and grammar tools
You specifically need Citations and Paraphrasing
You care about includes grammar as a core feature, purpose-built for ai writing workflows
Your team size fits the individuals profile QuillBot is designed for
The free tier works for you: free with 125-word limit