Claude vs Grammarly comparison

By starting price alone, Grammarly is $5 cheaper. But price is not everything, so check the highlighted rows in the table below.

Claude and Grammarly compared side by side in AI.

CurrencyUSDKRWEUR

Claude

AI assistant strong in writing and coding. Strengths are long-document analysis and natural prose

What is good

  • Top-tier writing quality and coding skill
  • Handles long documents
  • Focus on safety and accuracy

What could be better

  • Small free usage allowance
  • No image or video generation

Claude official site

Grammarly

An AI writing assistant that fixes English grammar and sentences

What is good

  • English proofreading anywhere in browsers and apps
  • Useful for business English

What could be better

  • Advanced style and tone suggestions and paragraph rewriting are limited to 6 languages including English (Korean gets only spelling, basic grammar and translation)
  • Monthly billing is expensive

Grammarly official site

At a glance

Highlighted rows are where they differ.

ItemClaudeVisit siteGrammarlyVisit site
Starting price$20+Official USD price$15+Official USD price
Free tierFree plan availableFree plan available
Korean supportGoodAverage
Main models
  • Claude Fable 5.1
  • Opus 5.5
  • Sonnet 5.5
  • Haiku 5.5
  • Claude Code
  • In-house proofreading model + generative AI
  • AI agents (AI Detector/plagiarism check/AI Grader and others)
  • Superhuman Go
TypeAI servicesAI services
CategoryChatbot/Assistant, Coding, Writing/ProductivityWriting/Productivity
CompanyAnthropic, United StatesGrammarly (Superhuman), United States
Plans
  • Free
  • Pro $20 (annual billing $17)
  • Max $100/$200
  • Team $25/$125 (per seat)
  • Enterprise
  • Free
  • Pro $15 (annual billing $12)
  • Business $40 ($33 annual, Mail included)
  • Enterprise
Pros
  • Top-tier writing quality and coding skill
  • Handles long documents
  • Focus on safety and accuracy
  • English proofreading anywhere in browsers and apps
  • Useful for business English
Cons
  • Small free usage allowance
  • No image or video generation
  • The top model (Fable) has generous use only on Max and above
  • Advanced style and tone suggestions and paragraph rewriting are limited to 6 languages including English (Korean gets only spelling, basic grammar and translation)
  • Monthly billing is expensive

Prices and benefits may change. Check the official site before you pay.

Prices converted at 1 USD = ₩1,325.57 (2026-10-21). Original price shown in brackets. Taxes as listed by each provider.

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