
Grammarly

Side-by-side comparison based on pricing, features, and community data.
Grammarly and Synthesia are both AI education tools. Grammarly is Freemium; Synthesia is Freemium. These tools solve entirely different problems and shouldn't be compared directly.
These tools solve entirely different problems and shouldn't be compared directly. Grammarly refines existing written text through real-time suggestions and checks; Synthesia generates video content from scratch. Pick Grammarly if your workflow centers on writing—emails, documents, social posts—and you need grammar, tone, and plagiarism detection across 500+ apps. Pick Synthesia if you need to produce training videos, product demos, or multilingual marketing content without hiring actors or cameramen. Grammarly costs ~$12/month for premium; Synthesia targets teams with higher budgets. They're complementary, not competitive—use both if creating written content that later becomes video.
Pick Grammarly if you write frequently in browsers, emails, and documents and want real-time grammar, tone, and plagiarism feedback.
Pick Synthesia if you need to produce professional videos in 160+ languages without cameras, studios, or video editing skills.
| Feature | Grammarly | Synthesia |
|---|---|---|
| Primary output | Improved written text | Video files |
| Real-time functionality | ✓ As-you-type suggestions | — |
| Language support | Grammar/tone in English focus | 160+ languages with dubbing |
| Integration scope | 500+ web apps via browser | PowerPoint, Google Slides, API |
| Target user skill level | All writers | No video expertise needed |
| Plagiarism checking | ✓ Premium only | — |
| Free tier | Basic grammar checks | Limited video minutes |
Synthesized by AI from verified tool data · cached per pair


Basic grammar and spell checking
All features including plagiarism detection, tone detection, advanced suggestions
Team collaboration, brand style guides, team analytics
1,200 credits/mo, up to 10 minutes of video/month
1,200 credits/mo, up to 10 minutes of video or AI Dubbing/month
3,600 credits/mo, up to 30 minutes of video or AI Dubbing/month
Unlimited video minutes, custom credits