What is the difference between ChatGPT and Grammarly?

ChatGPT focuses on Conversational AI and is freemium, while Grammarly specializes in Grammar and spell check and is freemium. Both are AI Writing tools.

Is ChatGPT or Grammarly better?

It depends on your needs. ChatGPT excels at Extremely versatile, while Grammarly is known for Works across all platforms. Compare their features above to decide which fits your workflow.

ChatGPT vs Grammarly

AI Writing tools comparison · Updated 2026

Choosing between ChatGPT and Grammarly? Both are popular AI Writing tools. ChatGPT starts at Freemium and focuses on Conversational AI. Grammarly starts at Freemium and specializes in Grammar and spell check. Here's a detailed side-by-side comparison to help you decide.

At a Glance

	ChatGPT	Grammarly
Category	AI Writing	AI Writing
Pricing	freemium	freemium
Starting Price	Freemium	Freemium
Best For	chatbot, writing, coding	grammar, writing-assistant, proofreading
Features	7 listed	6 listed

ChatGPT

OpenAI's conversational AI assistant for writing, coding, analysis, and creative tasks.

AI Writing freemium

Visit ChatGPT → Alternatives

Grammarly

AI writing assistant for grammar, clarity, tone, and style improvements.

AI Writing freemium

Visit Grammarly → Alternatives

Feature Comparison

ChatGPT	Grammarly
✓ Conversational AI	✓ Grammar and spell check
✓ Code generation	✓ Tone detection
✓ Document analysis	✓ Plagiarism checker
✓ Image generation via DALL-E	✓ Style suggestions
✓ Web browsing	✓ Browser extension
✓ Plugin ecosystem	✓ Generative AI writing
✓ Custom GPTs	—

Pricing Comparison

ChatGPT

freemium

Free tier with GPT-3.5. Plus plan at $20/mo for GPT-4, DALL-E, and priority access.

Grammarly

freemium

Free basic grammar checking. Premium $12/mo. Business $15/member/mo.

Pros & Cons

ChatGPT

Pros

+ Extremely versatile
+ Constantly improving
+ Huge plugin ecosystem
+ Great for coding

Cons

− Can hallucinate facts
− Free tier limited to GPT-3.5
− No real-time data on free plan

Grammarly

Pros

+ Works across all platforms
+ Excellent grammar detection
+ Intuitive interface
+ Real-time suggestions

Cons

− Premium is expensive for individuals
− Occasional false positives
− Limited free tier features

The Verdict

Both ChatGPT and Grammarly are strong AI Writing tools. ChatGPT stands out for Extremely versatile, making it ideal if that's your priority. Grammarly excels at Works across all platforms, which may be more important for your workflow.