Grammarly vs Sudowrite
A side-by-side look at Grammarly and Sudowrite — pricing, features and where each one wins. Both are reviewed independently on Curata AI.
| Grammarly | Sudowrite | |
|---|---|---|
| Summary | Writing assistant that catches grammar, tone and style issues in real time. | AI writing partner built specifically for novelists, screenwriters and fiction writers. |
| Pricing | Freemium | Paid |
| Category | Writing | Writing |
| Platforms | Web, Chrome, Word, iOS, Android | Web |
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Which one should you choose?
Grammarly
Best for: Writing assistant that catches grammar, tone and style issues in real time.
Sudowrite
Best for: Novelists, screenwriters, fanfiction writers and anyone drafting long-form fiction.
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Read the full Grammarly review
Grammarly is the writing assistant most professionals already have installed. Beyond grammar, its tone detection, rewrite suggestions and generative features help you sound clearer and more consistent across email, docs and browser writing. It is not a replacement for a chatbot, but it is the safety net that catches what a chatbot writes on your behalf.
Read the full Sudowrite review
Sudowrite is an AI writing tool purpose-built for fiction rather than marketing copy or generic chat. Its Story Bible takes a writer from a loose idea through outline, chapter beats and full first draft in their own voice. Write acts like autocomplete tuned to a manuscript's characters, tone and plot arc; Describe adds sensory detail; Expand fixes rushed pacing; Rewrite handles line-level revision; and Feedback gives five actionable notes without needing beta readers. Under the hood, Sudowrite routes requests across multiple models — Anthropic's Claude, OpenAI models, open-source models and its own in-house fiction model, Muse — picking whichever fits the task. A visual Canvas for plotting, a Brainstorm tool for names and twists, Visualize for character/world art, and a library of 1,000+ community plugins round out the toolkit. Sudowrite claims no ownership over anything written in or generated by the app and does not train on user writing.