HeyGen vs Synthesia: Which AI Video Platform Is Better?
Both create AI avatar videos from scripts, but HeyGen and Synthesia serve different markets. Here's which one is right for your use case.
HeyGen and Synthesia both create professional AI avatar videos from text scripts. The output quality is comparable. The difference is their target buyer: HeyGen is built for marketers, content creators, and businesses that want high-quality video production. Synthesia is built for enterprise learning & development and corporate communications teams.
The One-Line Answer
Choose HeyGen if you’re a marketer, creator, or business that needs high-quality AI video content, especially with multilingual dubbing or interactive avatar features. Choose Synthesia if you’re an L&D team that needs interactive training content with SCORM export and LMS integration.
Feature Comparison
| Feature | HeyGen | Synthesia |
|---|---|---|
| AI avatar quality | ✅ Excellent | ✅ Excellent |
| Avatar library | 100+ | 140+ |
| Languages | 40+ | 120+ |
| Video translation/dubbing | ✅ Best in class | ✅ |
| Interactive video (quizzes) | ❌ | ✅ |
| SCORM export | ❌ | ✅ |
| LMS integration | ❌ | ✅ |
| Real-time interactive avatars | ✅ | ❌ |
| Custom avatar clone | ✅ (Creator+) | ✅ (Creator+) |
| Screen recording overlay | ❌ | ✅ |
| Starting price | $29/month | $22/month |
| Free trial | 1 min (watermarked) | 3 watermarked videos |
Avatar Quality
Both platforms have crossed the quality threshold for professional use. The talking heads are convincing, the lip sync is accurate, and the avatars present in a broadcast-professional way.
In side-by-side comparisons, HeyGen’s newer avatars (especially the PhotoAvatar feature, which generates an avatar from a photo) are slightly more expressive. Synthesia’s avatars are slightly more conservative, professional but less emotive.
For corporate training (Synthesia’s core use case), slightly conservative is appropriate. For marketing content, HeyGen’s expressiveness is an advantage.
Winner: Tie (context-dependent)
Video Translation and Dubbing
HeyGen’s translation feature is the best in the category. Upload a video in any language; HeyGen generates a dubbed version in 40+ languages with the original speaker’s voice preserved and lip movements resynced.
Synthesia also offers multilingual publishing (120+ languages, more than HeyGen). The workflow is different: you provide translated scripts per language and generate separate videos. HeyGen’s dubbing automates the translation of existing video; Synthesia’s is more a multi-language generation workflow.
For companies dubbing existing video content: HeyGen wins. For companies publishing new training content in many languages: Synthesia’s 120-language library gives more options.
Winner: HeyGen (dubbing existing video); Synthesia (language breadth for new content)
eLearning and Training Features
This is Synthesia’s clear differentiator:
- Interactive video: Add knowledge checks, quizzes, and branching paths within videos
- SCORM export: Compatible with all major LMS platforms (Moodle, Cornerstone, Docebo, etc.)
- Screen recording: Add screen captures directly within videos for software training
- Media library: Centralized asset management for enterprise content teams
HeyGen has none of these features. It’s a video generation tool; Synthesia is a training production platform.
For any L&D team that needs to deliver trackable, interactive training through an LMS, Synthesia is the right tool and HeyGen isn’t in the conversation.
Winner: Synthesia
Real-Time Interactive Avatars
HeyGen’s Streaming API enables real-time interactive AI avatars, avatars that respond to user input in real time, suitable for website chatbots, interactive demos, or virtual customer service.
Synthesia doesn’t have a comparable real-time avatar product.
For companies exploring AI avatar-powered customer experiences or interactive product demos, HeyGen’s real-time avatars open use cases that don’t exist in Synthesia.
Winner: HeyGen
Pricing
| Plan | HeyGen | Synthesia |
|---|---|---|
| Entry paid | $29/month (Creator, 15 credits) | $22/month (Starter, 10 min) |
| Mid-tier | $89/month (Business, 30 credits) | $67/month (Creator, 30 min) |
| Enterprise | Custom | Custom |
Synthesia is slightly cheaper at comparable generation limits. For L&D teams buying at scale, Synthesia’s enterprise contracts tend to be more favorably structured for high-volume training content.
Winner: Synthesia (price)
Who Should Use Each
HeyGen is right for:
- Marketing teams creating product demos and promotional content
- Sales teams personalizing video outreach at scale
- Companies needing multilingual dubbing of existing video
- Businesses building real-time AI avatar applications
- Content creators and social video producers
Synthesia is right for:
- Corporate L&D teams building training libraries
- HR teams creating onboarding content
- Any organization needing SCORM-compatible, LMS-delivered video training
- Companies building interactive training modules with embedded assessments
- Enterprise communications teams producing internal video at scale
Frequently Asked Questions
Which has better avatar quality, HeyGen or Synthesia? Both are excellent. HeyGen’s newer avatar models are slightly more expressive; Synthesia’s are slightly more conservative. Neither is a meaningful differentiator for most use cases.
Can HeyGen export SCORM? No, HeyGen doesn’t support SCORM or LMS integration. If you need training content delivered through a learning management system, Synthesia is the right tool.
Is HeyGen cheaper than Synthesia? Synthesia’s entry plan ($22/month) is slightly cheaper than HeyGen’s ($29/month). At comparable generation volumes, the difference is small.