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Grammarly vs Sudowrite

Side-by-side comparison of Grammarly and Sudowrite: pricing, features, API access, and community ratings.

AI comparison summary
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Grammarly
Grammarly

AI writing assistant that catches grammar errors and improves clarity in real time.

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Sudowrite
Sudowrite

The non-judgmental AI writing partner built exclusively for fiction and novel writing

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Category
Writing & editing
Writing & editing
Pricing
Freemium
Freemium
Starting price
USD 12/mo
USD 10/mo
Free tier
Audience
Non-technical
Non-technical
API available
Open source
Self-hostable
Model provider
Grammarly
Sudowrite (Muse 1.5, proprietary)
Founded
2009
Headquarters
San Francisco, US
San Francisco, United States
Key strengths
  • ·grammar + spelling
  • ·tone detection
  • ·plagiarism check
  • ·browser extension
  • ·Purpose-built for fiction and novel writing with story-aware AI (Muse 1.5)
  • ·End-to-end story development from idea to full manuscript via Story Bible
  • ·Style-matching AI that writes in the author's own voice
  • ·Rich toolset including Write, Rewrite, Expand, Describe, Feedback, and Canvas
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