AI Tool Comparison
Grammarly vs Scalenut
A side-by-side breakdown to help you pick the right tool for your workflow.
Grammarly
Catch grammar and clarity issues as you write, then let built-in AI agents draft, rewrite, and complete tasks across your apps. Grammarly's parent company rebranded to Superhuman in October 2025.
Scalenut
Cluster keywords, generate SEO-optimized articles, and track how often your brand's prompts surface across AI answer engines, all from one workspace. Repositioned as a full-stack GEO platform.
Bottom Line
Last reviewed: August 2026
Grammarly and Scalenut both compete in Writing, overlapping most directly on writing. Grammarly runs on a freemium model while Scalenut runs on a paid-only plan, which alone may settle it if budget or a free tier is a hard requirement. Grammarly carries the higher rating (4.7 vs 4.4), but a gap that size rarely overrides a real workflow fit on its own.
Choose Grammarly if…
Best for catching grammar and clarity issues in real time as you write anywhere online, and its edge is built-in AI agents now draft and rewrite across your apps, not just proofread. The baseline writing check most people should already have running.
Choose Scalenut if…
Best for content teams that need research, writing, and SEO optimization handled in one connected workflow, and its edge is cruise Mode generates a complete, SEO-optimized article from a single keyword in under five minutes. A strong all-in-one for scaling content production, the price is steep for a solo freelancer's budget.
| Attribute | Grammarly | Scalenut |
|---|---|---|
| Category | Writing | Writing |
| Pricing | freemium | paid |
| Pricing Detail | Free / $12/mo Pro (annual) / Enterprise custom | $59/mo Starter / $89/mo Plus / $199/mo Professional |
| Rating |
Key Features
Grammarly
- Grammar and spelling checks
- Tone detection
- Plagiarism checker
- Generative AI co-creator
- Browser extension
Scalenut
- Keyword planning
- SERP analysis
- AI article writer
- Content optimizer
- Cruise Mode (1-click articles)
Pros
Grammarly
- •Works everywhere you write
- •Highly accurate suggestions
- •Improves overall writing quality
- •Generative features are helpful
Scalenut
- •Strong SEO research built in
- •Good keyword clustering
- •Solid long-form content quality
- •All-in-one content workflow
Cons
Grammarly
- Premium plan is somewhat pricey
- Can be overly pedantic
- Generative features are basic compared to ChatGPT
Scalenut
- Expensive for freelancers
- UI can be slow
- Quality varies by topic