Grammarly vs Sudowrite: Which AI Writing Tool Is Better in 2026?
Grammarly
From $12Sudowrite
From $10Quick verdict
Overall pick: Grammarly
Grammarly is the better pick for everyday editing and team use: it starts at $12 per seat, includes a brand voice feature, a plagiarism checker, a browser extension and team workspaces. Sudowrite starts at $10 flat and is built for novelists and creative writing, with multilingual output but no plagiarism checker, browser extension, brand voice or team seats. Choose Grammarly for professional or collaborative editing, and Sudowrite for solo fiction drafting.
- Sudowrite's entry plan ($10) is 17% cheaper than Grammarly's ($12).
- Grammarly charges per user while Sudowrite uses a flat price, so Sudowrite gets relatively cheaper as your team grows.
- Grammarly has a free plan; Sudowrite does not.
- Only Grammarly offers: brand voice / style memory, plagiarism checker, browser extension, team workspaces.
- Only Sudowrite offers: multilingual output.
Cost calculator
| Tool | Monthly | Yearly |
|---|---|---|
| Grammarly · per user | $60.00 | $720 |
| Sudowrite · flat | $10.00 | $120 |
Based on entry-level paid plans. Prices change, so check the vendor before you buy.
Which one should you choose?
| If you need… | Pick | Why |
|---|---|---|
| Editing everyday business or academic writing | Grammarly | Grammarly covers grammar, tone and clarity, includes a plagiarism checker and a browser extension, and is best for everyday writing and editing. |
| Drafting a novel or creative fiction | Sudowrite | Sudowrite is positioned as an AI writing partner for fiction authors and lists novelists and creative writing as its best uses. |
| Equipping a team with a shared writing tool | Grammarly | Grammarly offers team workspaces and brand voice/style memory; Sudowrite has neither. |
| Producing multilingual output | Sudowrite | Sudowrite supports multilingual output, while Grammarly does not list that feature. |
| Budgeting for a single user | Sudowrite | Sudowrite starts at $10 on flat billing, versus Grammarly at $12 per seat, so a solo buyer pays less with Sudowrite. |
Feature comparison: Grammarly vs Sudowrite
| Feature | ||
|---|---|---|
| Free plan | ✅ | ❌ |
| Starting price | $12 /user/mo | $10 /mo |
| Copy templates | — | — |
| Brand voice / style memory | ✅ | — |
| Plagiarism checker | ✅ | — |
| Browser extension | ✅ | — |
| SEO optimisation | — | — |
| Team workspaces | ✅ | — |
| Multilingual output | — | ✅ |
| Public API | — | — |
Highlighted rows are where the tools differ.
Pros and cons
Grammarly
- Includes a plagiarism checker, which Sudowrite lacks
- Offers brand voice/style memory and team workspaces for collaborative editing
- Has a browser extension for writing across the web
- Free plan available alongside a $12 per-seat starting price
- Priced per seat, so costs scale with team size
- No multilingual output listed
- No public API or SEO optimisation mode
Sudowrite
- Flat $10 starting price suits a single author
- Multilingual output supported, unlike Grammarly
- Purpose-built for fiction authors and creative writing
- No plagiarism checker, browser extension, brand voice or team workspaces
- No free plan
- No public API or SEO optimisation mode
At a glance
Writing assistant for grammar, tone and clarity.
Founded 2009 · From $12 · 4/8 tracked features
Best for: everyday writing, editing
See Grammarly alternatives →AI writing partner for fiction authors.
Founded 2020 · From $10 · 1/8 tracked features
Best for: novelists, creative writing
See Sudowrite alternatives →FAQ
Is Grammarly cheaper than Sudowrite?
Not per user: Grammarly starts at $12 per seat and Sudowrite at $10 flat. Grammarly's cost grows with each seat, while Sudowrite's flat price does not.
Which tool has a plagiarism checker?
Grammarly includes a plagiarism checker; Sudowrite does not list one.
Can I use these tools with a team?
Grammarly offers team workspaces and brand voice/style memory. Sudowrite lists neither team workspaces nor brand voice.
Does either tool support multilingual output?
Sudowrite lists multilingual output; Grammarly does not.
Which is better for fiction writing?
Sudowrite, which is described as an AI writing partner for fiction authors and lists novelists and creative writing as best uses. Grammarly is aimed at everyday writing and editing.
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Data last reviewed: pending verification. All AI Writing tools →