Perplexity AI vs Grammarly
A detailed comparison of Perplexity AI and Grammarly — features, pricing, pros & cons, and which one is right for you.
Last updated: April 14, 2026
MonthlyAnnual
Pricing Comparison
| Plan | Perplexity AI | Grammarly |
|---|---|---|
| Free | Free | Free |
| Pro | $20/mo | $30/mo |
| Business | — | $25/mo |
Feature Comparison
| Feature | Perplexity AI | Grammarly |
|---|---|---|
| AI writing | ||
| API access | ||
| Chrome extension | ||
| Citations | ||
| File upload | ||
| Free tier | ||
| Image generation | ||
| Research | ||
| Ad copy | ||
| Brand voice | ||
| Long-form writing | ||
| Plagiarism checker | ||
| SEO optimization | ||
| Team collaboration |
Pros & Cons
Perplexity AI
Pros
- Real-time web search
- Cites sources
- Free to use
- Pro Search for deep research
Cons
- Not a writing tool per se
- Pro needed for best results
- Can hallucinate citations
Grammarly
Pros
- Industry standard
- Browser extension
- Tone detection
- Plagiarism checker
Cons
- Expensive premium
- Aggressive upselling
- Sometimes over-corrects