Grammarly vs Sudowrite
Grammarly uniquely has 3 features · Sudowrite uniquely has 1 feature.
| Grammarly | Sudowrite | |
|---|---|---|
| Company | ||
| Founded | 2009 | 2020 |
| HQ | San Francisco, USA | San Francisco, USA |
| AI model | Proprietary | Proprietary (Muse), Claude by Anthropic, OpenAI models, open-source models |
| User base | 40 million+ | — |
| Platforms | Web, Windows, Mac, iOS, Android, Chrome, Safari, Firefox, Edge, MS Office, Google Docs | Web |
| Languages | English primary, with fluency support for non-native English speakers | 30+ languages |
| Pricing | ||
| Free plan | Yes | No |
| Free trial | Yes — 7-day free trial for Pro | Yes — free trial, no credit card required |
| Starting price | $12/mo (Pro plan, billed annually) | $10/mo (Hobby & Student) |
| Enterprise | Custom | Custom — contact required |
| All plans | Free$0/moPro$30/moEnterpriseContact Sales | Hobby & Student$19/moProfessional$29/moMax$59/moEnterpriseCustom |
| Positioning | ||
| Best for | Individuals, teams, and enterprises seeking AI-powered writing assistance, grammar checking, and tone improvement | Fiction writers, novelists, screenwriters, and creative writing enthusiasts |
| Differentiator | The most widely adopted AI writing assistant, trusted by 40 million users and 50,000 organizations, offering real-time grammar, tone, plagiarism, and AI detection with enterprise-grade security and style guide enforcement. | Purpose-built fiction AI with proprietary Muse model, Story Bible workflow, and a full suite of tools (Write, Expand, Rewrite, Feedback, Canvas, Visualize) designed specifically for novelists and screenwriters. |
| Competitors | Hemingway Editor, ProWritingAid, QuillBot, Jasper, Copy.ai, Writer | Jasper, Copy.ai, Squibler, NovelAI, ChatGPT |
| Features | ||
| AI Copywriting | ✓ | ✕ |
| AI Research | ✕ | ✕ |
| Brand Voice | Deep — brand tones (1 on Free, unlimited on Enterprise), style guide, knowledge share, snippets | Basic — matches user's writing style and voice via contextual analysis |
| Bulk Generation | ✕ | ✕ |
| Content Editor | ✓ | ✓ |
| Grammar Style | ✓ | ✓ |
| Image Generation | No | Built-in — Visualize feature generates art from character/worldbuilding descriptions |
| Long Form Writing | ✓ | ✓ |
| Paraphrasing | ✓ | ✓ |
| Plagiarism Checker | Built-in — available on Pro and Enterprise plans | No |
| SEO Optimization | ✕ | ✕ |
| Short Form Writing | ✓ | ✓ |
| Templates | ✕ | ✓ |
| Integrations | ||
| API Access | — | ✕ |
| Chrome Extension | ✓ | ✕ |
| CMS | — | ✕ |
| Google Docs | ✓ | ✕ |
| Key Integrations | Google Docs, Microsoft Office (Word), Chrome, Safari, Firefox, Edge, Windows desktop app, Mac desktop app, iPhone, iPad, Android, Zendesk (shown in marketing) | 1,000+ community-built Plugins for extended functionality (reader simulation, character dialogue, screenplay conversion, etc.) |
| Wordpress | ✕ | ✕ |
| Zapier | — | ✕ |