AI Tools comparison · 2026
Grammarly vs Perplexity (2026 Comparison)
Side-by-side: pricing, features, pros, cons, and our editorial winner for ai tools.
Winner summary
Grammarly vs Perplexity: how they differ
We have not scored Grammarly against our rubric yet, so we are not naming an overall winner here. The dimensions below are still directly comparable.
Cheaper
Grammarly
Higher rated
Not compared
Better free tier
Tie
Grammarly
Writing assistant that works across the apps you already use
Not yet scored
$12/mo
Feature comparison
| Dimension | Grammarly | Perplexity |
|---|---|---|
| Starting price | $12/mo | $20/mo |
| Free trial | Free plan | Free plan |
| Best for | Anyone who writes in a browser all day | Research & fact-finding |
| Badge | — | — |
Grammarly key features
- Grammar, spelling and tone on the free plan
- 100 AI prompts free, 2,000 on Pro
- Full-sentence rewrites on Pro
- Plagiarism and AI-text detection on Pro
- BYOK encryption on Enterprise
Perplexity key features
- Pro Search with deep web access
- Citations on every answer
- Switch between GPT-5/Claude/Gemini
- Spaces for projects
- Comet browser
Grammarly — pros & cons
Pros
- Free tier is genuinely useful, not a teaser
- Works inside most web apps rather than as a separate editor
- Single $12 paid tier — no tier puzzle
Cons
- Plagiarism and rewrite features are Pro-only
- English-focused compared with dedicated translators
Perplexity — pros & cons
Pros
- Best for cited research
- Switchable underlying model
- Clean, fast UI
Cons
- Not built for long-form writing
- Citations sometimes thin
When to pick which
Choose Grammarly if…
- Everyday business writing
- Student and academic drafting
- Team tone consistency
Choose Perplexity if…
- Market research
- Fact-checking
- Quick answers