Our Verdict
Based on ratings, features, pricing, and capabilities, Runway edges ahead in this comparison. Runway scores higher on user ratings and overall feature set.
Feature
Runway
Synthesia
Rating
No ratings
No ratings
Free Plan
Starting Price
$15/mo
$22/mo
Monthly Visits
30.0M
12.0M
API Support
Open Source
AI Capabilities
Mobile App
Desktop App
Browser Extension
Integrations
1 apps
2 apps
Team Size
SMB
SMB
Runway Pros & Cons
Pros
- Leading quality among AI video generation tools
- AI editing tools (green screen, inpainting) are useful beyond pure generation
- Actively used in real professional film/ad production, not just novelty
Cons
- Credit-based pricing can add up for heavy generation use
- Generated video length/consistency still has real limitations
- Best results still require iteration and skilled prompting
Synthesia Pros & Cons
Pros
- Dramatically cheaper and faster than filming traditional training videos
- Easy to update videos by just editing the script text
- Strong multilingual voiceover coverage for global teams
Cons
- Avatars can still read as synthetic for high-stakes brand content
- Less suited to creative/narrative video than corporate/training use cases
- Custom avatar creation requires a higher-tier plan
Runway Key Features
- Text-to-video & image-to-video generation
- AI green screen & inpainting
- Motion tracking
- Camera control for generated video
- Collaborative creative workspace
Synthesia Key Features
- 150+ stock AI avatars
- Custom avatar creation from your own footage
- 140+ language voiceovers
- Screen recording & templates
- Brand kit for consistent styling