AI Tool Comparison
RunwayML vs Synthesia
A side-by-side breakdown to help you pick the right tool for your workflow.
RunwayML
Generate and edit video with Gen-4.5, or access Kling, Veo 3.1, and Seedance from the same interface. The multi-model video studio used by professional filmmakers.
Synthesia
Turn a script into a studio-quality talking-avatar video in minutes, with instant AI dubbing into 160+ languages so one video ships across every market at once.
Bottom Line
Last reviewed: August 2026
RunwayML and Synthesia both compete in Video, overlapping most directly on video. RunwayML runs on a freemium model while Synthesia runs on a paid-only plan, which alone may settle it if budget or a free tier is a hard requirement. RunwayML carries the higher rating (4.6 vs 4.5), but a gap that size rarely overrides a real workflow fit on its own.
Choose RunwayML if…
Best for professional video generation and editing across multiple AI models in one studio, and its edge is access to Gen-4.5, Kling, Veo 3.1, and Seedance from a single interface. The most flexible choice when you don't want to commit to just one video model. Lean toward Synthesia instead if instant AI dubbing into 160+ languages so one video covers every market matters more for your use case.
Choose Synthesia if…
Best for turning a script into a studio-quality talking-avatar video without filming anything, and its edge is instant AI dubbing into 160+ languages so one video covers every market. The standard choice for training and marketing videos at scale without a camera crew. Lean toward RunwayML instead if access to Gen-4.5, Kling, Veo 3.1, and Seedance from a single interface matters more for your use case.
| Attribute | RunwayML | Synthesia |
|---|---|---|
| Category | Video | Video |
| Pricing | freemium | paid |
| Pricing Detail | Free (limited) / $12/mo Standard / $28/mo Pro / $76/mo Max / Enterprise custom | $18/mo Starter / $89/mo Creator / Enterprise custom |
| Rating |
Key Features
RunwayML
- Gen-2 Video Generation
- Text to Video
- Image to Video
- Video to Video
- AI Magic Tools for editing
Synthesia
- 150+ AI avatars
- 120+ languages
- Custom avatars
- Video templates
- Screen recording
Pros
RunwayML
- •Cutting edge video generation
- •Browser-based
- •Wide variety of AI tools
- •Constantly shipping new features
Synthesia
- •Great for training and corporate videos
- •Saves huge amounts of time and money
- •High-quality avatars
- •Easy to update videos later
Cons
RunwayML
- Credits get used up quickly
- Video generation can be hit or miss
- Steep learning curve for best results
Synthesia
- Avatars can still look slightly stiff
- Limited movement and gestures
- Pricing can add up for high volume