Claude vs Grammarly

A detailed side-by-side comparison to help you choose the right tool.

Anthropic's thoughtful AI assistant — excels at analysis, writing, and nuanced reasoning.

AI writing assistant that catches errors, improves clarity, and helps you write with confidence.

Rating

4.7

4.5

Pricing Modelfreemiumfreemium

Starting Price$0/mo$0/mo

200K context window handles extremely long documents

Excellent at nuanced reasoning and careful analysis

Artifacts feature creates interactive content inline

Strong writing quality with consistent tone and style

Good at acknowledging when it's uncertain

Solid coding capabilities across many languages

Works everywhere — browser extension covers Gmail, Slack, Docs, and 500+ platforms

Tone detection helps you understand how your writing will be perceived

Free tier catches more grammar issues than most paid competitors

Style Guide feature enforces consistent writing across entire organizations

30+ million users means the AI has been trained on massive amounts of feedback

Pro plan required for Claude 3.5 Sonnet and Opus

Smaller ecosystem compared to ChatGPT

Can be overly cautious or refuse valid requests

No built-in image generation

Web search capabilities are more limited

Premium subscription at $12/month feels steep for a grammar checker

GrammarlyGO generative features lag behind dedicated AI writers

Suggestions can be overly conservative, stripping personality from casual writing

Business plan at $15/member/month is expensive for large teams