📖 The AI Tool Bible

Claude vs Grammarly

A side-by-side look at pricing, capabilities, pros, cons, and our editorial scores.

 
Claude
Writing
Grammarly
Writing
TaglineAnthropic's flagship assistant for long-form writing, analysis, and coding.Cross-app AI writing assistant that catches errors, rewrites paragraphs, and adjusts tone in the tools you already use.
CategoryWritingWriting
PricingFreemium· Free tier; Pro $20/mo; Max $100–$200/moFreemium· Free; Pro $12/mo annual or $30/mo; Enterprise custom
ModelClaude Opus / SonnetProprietary + multi-model
Editorial score9.6 / 10—
Use cases
long-form writingsummarizationresearchcoding
grammar-checktone-adjustmentparagraph-rewriteplagiarism-detectionresume-writingcitation-generation
Pros
  • Best-in-class long-context reasoning
  • Excellent at following style guidelines
  • Projects + Artifacts UX
  • 1M-token context on Sonnet
  • Runs inside almost every app and website with no copy-paste workflow
  • Free tier is genuinely usable for everyday proofreading
  • Enterprise-grade privacy controls and style guides for teams
  • Purpose-built agents (AI detector, humanizer, citations) beyond generic chat
Cons
  • No real-time browsing by default
  • Image generation limited
  • Region availability varies
  • No public generative API for developer integrations
  • Pro is pricey vs. running rewrites through a raw LLM subscription
  • Suggestions can feel formulaic and flatten distinctive voice
  • Closed-source with limited transparency about underlying models
Websiteclaude.aiwww.grammarly.com
Pick Claude if
  • ✅ Best-in-class long-context reasoning
  • ✅ Excellent at following style guidelines
  • ✅ Projects + Artifacts UX
  • ✅ 1M-token context on Sonnet
Pick Grammarly if
  • ✅ Runs inside almost every app and website with no copy-paste workflow
  • ✅ Free tier is genuinely usable for everyday proofreading
  • ✅ Enterprise-grade privacy controls and style guides for teams
  • ✅ Purpose-built agents (AI detector, humanizer, citations) beyond generic chat
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