Side by side
| Feature | HeyGen | Synthesia |
|---|---|---|
| What it does | AI video generator that turns text, images or audio into videos with realistic avatars, narration, captions and translation, for creators and marketers. | Creates studio-quality AI avatar videos with voiceovers in 140+ languages, mainly for business training, marketing and internal communication. |
| Price from | 29 USD/mo | 29 USD/mo |
| Free plan | yes | yes |
| Platforms | web, api | web, api |
| API | yes | yes |
HeyGen: key features
- AI avatars with consistent identity and lip-sync in 175+ languages
- Text-to-video generation from a prompt via Video Agent
- Text-based AI Studio editor with control over tone, gestures and emotion
- One-click video translation with voice cloning from file or YouTube link
- Auto captions, B-roll and motion graphics
- Team collaboration with commenting, Brand Kit and SCORM export on business plans
Synthesia: key features
- AI avatars with customizable outfits and backgrounds
- Personal avatars created from a single photo
- AI Video Assistant that builds video from prompts, links or files
- PPT to narrated, editable video conversion
- AI dubbing and translation into 130+ languages with lip-sync
- Roleplay and survey Sessions with interactive avatars
FAQ
Is HeyGen or Synthesia better?
It depends on the job - compare prices, free plans and features in the table above.
Are HeyGen and Synthesia free?
HeyGen: Yes, there is a free plan. 3 videos per month up to 1 minute, access to Avatar IV, 500+ stock avatars, 1 custom video avatar, 30+ languages. Synthesia: Yes, there is a free plan. Basic plan: 10 minutes of video creation or dubbing, 3 survey responses, 500 credits, share links, pre-built libraries and templates; watermark on videos.