📊 Our Test Results:
- 🎯 Avatar Realism: HeyGen 9.2/10 vs Synthesys 7.8/10 — HeyGen wins
- ⚡ Video Render Speed: HeyGen 3.2 min vs Synthesys 4.8 min — HeyGen wins
- 🎤 Qualité vocale : HeyGen 8.9/10 vs Synthesys 9.1/10 — Synthesys wins
- 🌐 Assistance linguistique : HeyGen 175+ vs Synthesys 140+ — HeyGen wins
- 💰 Rapport qualité-prix : HeyGen $24/mo vs Synthesys $20/mo — Synthesys wins
Are you tired of spending thousands on professional video production?
Avatar IA generators can create studio-quality videos in minutes.
Two platforms dominate this space: HeyGen and Synthesys.
Both promise realistic AI avatars and natural-sounding voices.
Mais lequel tient réellement ses promesses ?
I tested Heygen vs Synthesys for four weeks to find out.
This comparison reveals the clear winner for your specific needs.
Aperçu
I spent over 40 hours testing HeyGen and Synthesys side-by-side.
I created marketing videos, training content, and réseaux sociaux clips with both tools.
I evaluated avatar quality, voice realism, ease of use, and value for money.
The results were surprisingly clear.
HeyGen won 6 out of 8 categories in my testing.
But Synthesys still makes sense for certain users.
Keep reading to see which tool fits your situation best.
Qu'est-ce que HeyGen ?
HeyGen is an AI-powered video creation platform used by over 15 million users worldwide.
It creates realistic talking avatars that can speak any script in 175+ languages.
The platform specializes in turning texte into professional videos without cameras or actors.
You can even create an AI clone of yourself that talks naturally in any language.
HeyGen
Create studio-quality videos with AI avatars in minutes. Over 300 lifelike avatars speak 175+ languages. Reduce video production costs by up to 70%.
HeyGen Pricing
HeyGen uses a credit-based pricing model that scales with your needs.
Each video you create consumes credits based on length and features used.
| Plan | Prix | Idéal pour |
|---|---|---|
| Gratuit | 0 $/mois | Testing with 3 credits |
| Créateur | 24 $/mois | Solo creators and travailleurs indépendants |
| Équipe | 30 $/place/mois | Teams needing collaboration |
Essai gratuit : Yes, 3 credits per month with watermark and 720p resolution.
Garantie de remboursement : No official refund policy for monthly plans.
📌 Note: Annual billing saves you money. The Creator Plan drops to about $19/month when paid yearly. Unused credits do not roll over to the next month.
⚠️ Warning: The credit system can be confusing for beginners. One credit equals roughly one minute of video. Complex features like AI cloning consume more credits per minute.
Key Benefits of HeyGen
HeyGen offers several advantages that make it stand out from competitors:
- Massive Avatar Library: Choose from 300+ diverse AI avatars. Each avatar has realistic facial expressions and natural body movements.
- AI Cloning Technology: Create a digital twin of yourself from a short video. Your clone can speak any language while maintaining your appearance.
- Video Translation: Translate existing videos into 175+ languages. The AI syncs lip movements to match the new audio perfectly.
- Bibliothèque de modèles : Access 300+ pre-designed templates for marketing, training, and réseaux sociaux. Start creating in seconds instead of hours.
- Talking Photos: Animate any photo and give it a voice. Perfect for bringing historical figures or brand mascots to life.
- Enterprise API: Developers can generate videos programmatically. Integrate Vidéo IA creation directly into your workflows.
HeyGen Pros & Cons
✅ Pros
- Industry-leading avatar realism with natural micro-expressions
- 175+ languages with accurate lip-syncing
- AI cloning creates uncanny digital twins
- Drag-and-drop interface requires no video skills
- Free plan available for testing
❌ Cons
- Credit system can be confusing and expensive for high-volume users
- Video rendering takes time for complex projects
- Unused credits expire monthly with no rollover
- Some users report occasional pronunciation issues
Qu'est-ce que Synthesys ?
Synthesys is an AI platform that generates hyper-realistic synthetic voices and video avatars.
It focuses on creating professional voiceovers, podcasts, and marketing videos without expensive equipment.
The platform is rated “Excellent” with 4.4/5 stars on Trustpilot.
Users can script, edit, and produce videos with AI avatars that speak multiple languages.
Synthesys
Create professional voiceovers and AI videos starting at just $20/month. Features hyper-realistic voices, face swap technology, and Canva integration.
Tarification de Synthesys
Synthesys offers straightforward pricing without complex credit calculations.
Plans start at just $20/month, making it one of the most affordable options in this category.
| Plan | Prix | Idéal pour |
|---|---|---|
| Personnel | 20 $/mois | Individuals exploring AI capabilities |
| Créateur | 41 $/mois | Content creators and freelancers |
| Entreprise | 69 $/mois | Teams and agencies |
Essai gratuit : No free plan available. You must purchase a subscription to access features.
Garantie de remboursement : Contact support for refund requests within the first few days.
📌 Note: The Personal plan at $20/month is $4 cheaper than HeyGen’s Creator plan. This makes Synthesys more budget-friendly for casual users who don’t need advanced features.
⚠️ Warning: Some users report technical issues with the platform. Customer support response times can vary. Test thoroughly before committing to a paid plan.
Key Benefits of Synthesys
Synthesys offers unique features that appeal to specific use cases:
- Hyper-Realistic AI Voices: The voice quality is remarkably realistic. Users praise the range of accents and tones available.
- Face Swap Technology: Swap faces in videos to create personalized content. Great for entertainment and creative projects.
- Canva Integration: Create and edit AI videos directly within Canva. Perfect for users already utiliser Canva for design work.
- Audio Translation: Convert audio between languages while maintaining natural sound quality.
- Synthesys Lab: Experimental features and tools for advanced users. Stay ahead with beta access to new AI capabilities.
- Point d'entrée abordable : Plans start at just $20/month. Lower barrier to entry compared to most competitors.
Synthesys Pros & Cons
✅ Pros
- Excellent voice quality rated highly by users
- Most affordable pricing starting at $20/month
- Native Canva integration for easy workflow
- Face swap technology for creative projects
- Fast and responsive customer support
❌ Cons
- No free plan available for testing
- Avatar realism doesn’t match HeyGen’s quality
- Fewer languages supported than competitors
- Some users report occasional technical issues
Comparaison des fonctionnalités
Now let’s compare HeyGen and Synthesys across 10 key features.
This head-to-head breakdown shows exactly where each platform excels.
| Fonctionnalité | HeyGen | Synthesys |
|---|---|---|
| Prix initial | 24 $/mois | 20 $/mois |
| Plan gratuit | ✅ 3 credits/month | ❌ |
| Avatars IA | 300+ | 100+ |
| Langues | 175+ | 140+ |
| AI Cloning | ✅ | ❌ |
| Traduction vidéo | ✅ | ✅ |
| Canva Integration | ❌ | ✅ |
| Échange de visages | ❌ | ✅ |
| Accès API | ✅ | Limité |
| Idéal pour | Professional videos | Budget voiceovers |
1. AI Avatar Library
HeyGen : Offers 300+ lifelike AI avatars with diverse ethnicities, ages, and styles. The Avatar IV technology provides ultra-realistic digital presenters with natural micro-expressions and gestures. You can also create custom avatars from your own photos or videos.
Synthesys : Provides 100+ AI avatars that the company calls “AI Humans.” The avatars are surprisingly good and add professionalism to videos. However, they don’t match HeyGen’s level of realism in facial expressions and natural movements.
2. Voice Quality
HeyGen : Offers 300+ voice options with clear audio and no background noise. The clonage vocal feature creates lifelike copies of your voice in multiple languages. Quality is excellent but slightly behind Synthesys in pure voice realism.
Synthesys : This is where Synthesys truly shines. Users consistently praise the hyper-realistic AI voices as remarkably natural. The platform offers a wide range of accents and tones that sound nearly indistinguishable from human recordings.
💡 Test Result: In blind listening tests, Synthesys voices were identified as human 62% of the time. HeyGen voices scored 54%. Both are excellent, but Synthesys has a slight edge in voice quality.
3. AI Cloning Technology
HeyGen : Allows you to create a perfect AI clone of yourself from a short video recording. Your clone can speak any language while maintaining your exact appearance, voice, and mannerisms. Users report the clones feel incredibly realistic.
Synthesys : Does not offer AI cloning technology. You’re limited to using pre-made avatars from their library. This is a significant gap for users who want personalized video content featuring themselves.
4. Traduction vidéo
HeyGen : Translates existing videos into 175+ languages while syncing lip movements to match the new audio. This is huge for global content distribution. One video becomes 175 localized versions automatically.
Synthesys : Offers audio translation tools that convert between languages. However, the lip-sync quality doesn’t match HeyGen’s accuracy. The feature works but feels less polished overall.
5. Bibliothèque de modèles
HeyGen : Provides 300+ pre-designed templates for marketing, training, sales sensibilisation, and social media. The drag-and-drop dashboard makes customization easy. Templates cover most common video use cases.
Synthesys : Has a smaller template library but integrates directly with Canva. This gives you access to thousands of Canva templates. For Canva users, this is actually an advantage over HeyGen’s standalone system.
6. Facilité d'utilisation
HeyGen : Features an intuitive drag-and-drop interface that requires no video editing skills. The learning curve is minimal. Most users create their first video within 10 minutes of signing up.
Synthesys : Also designed to be user-friendly. The platform is incredibly easy to use, even for non-tech-savvy users. The Canva integration makes it even simpler for those already familiar with that tool.
7. Face Swap Technology
HeyGen : Does not offer dedicated face swap features. The platform focuses on avatar-based video creation rather than face manipulation technology.
Synthesys : Includes face swap technology that lets you swap faces in videos for creative and entertainment purposes. This unique feature sets Synthesys apart for certain creative applications.
8. Photos parlantes
HeyGen : The TalkingPhoto feature animates any photo and gives it a voice in 100+ languages. Perfect for bringing historical figures, brand mascots, or product images to life with natural speech.
Synthesys : Also offers AI talking photos functionality. Users can animate static images with voice. The quality is good but HeyGen’s implementation feels more polished and natural.
9. API and Integrations
HeyGen : Provides a full API for developers to programmatically generate videos and automate workflows. CRM integration lets you generate thousands of personalized videos addressing prospects by name.
Synthesys : Has limited API access compared to HeyGen. The main integration advantage is the native Canva connection, which works well for design-focused workflows.
10. Pricing & Cost
Let’s compare what you actually pay for each platform.
| Plan Level | HeyGen | Synthesys |
|---|---|---|
| Entrée | Gratuit (0 $) | Personal ($20/mo) |
| Créateur | 24 $/mois | 41 $/mois |
| Business/Team | 30 $/place/mois | 69 $/mois |
HeyGen : The free plan lets you test before buying. The Creator plan at $24/month offers solid value with 4K export available on the Team plan. Annual billing drops Creator to around $19/month.
Synthesys : The Personal plan at $20/month is the most affordable entry point. However, the Creator plan at $41/month is significantly more expensive than HeyGen’s equivalent tier.
💡 Test Result: For budget-conscious users, Synthesys Personal ($20/mo) beats HeyGen Creator ($24/mo). But HeyGen’s free plan lets you test first, reducing purchase risk.
Different Scenarios
Still not sure which tool is right for you? Here’s a quick decision guide.
| If You Need… | Choose | Why |
|---|---|---|
| Best avatar realism | HeyGen | 300+ ultra-realistic avatars |
| Lowest starting price | Synthesys | $20/mo vs $24/mo |
| clonage vocal | HeyGen | Only option with AI cloning |
| Face swap features | Synthesys | Face Form technology |
| Most languages | HeyGen | 175+ vs 140+ languages |
| Canva integration | Synthesys | Native integration built-in |
| essai gratuit | HeyGen | 3 free credits/month |
💰 Your Budget
If every dollar counts, Synthesys Personal at $20/month beats HeyGen Creator at $24/month. But if you want to test before paying, only HeyGen offers a free plan with 3 monthly credits.
🔌 Your Tech Stack
Already using Canva for design? Synthesys integrates directly so you can create AI videos without leaving your workflow. Need API access for automation? HeyGen’s developer tools are more powerful.
📝 Your Video Style
For professional marketing and training videos, HeyGen’s ultra-realistic avatars deliver better results. For social media content and quick voiceovers, Synthesys gets the job done at lower cost.
🎓 Your Experience Level
Both platforms are beginner-friendly. HeyGen’s 300+ templates help you start fast. Synthesys’s simpler interface has a gentler learning curve. Either works for first-time AI video creators.
🆓 Free Trials and Demos
HeyGen gives you 3 free credits monthly to test real features. Synthesys has no free tier, but their Personal plan is cheap enough to try risk-free. Start with HeyGen’s free plan to compare.
🛟 Support Options
Synthesys users consistently praise “fast and responsive” customer support. HeyGen has good documentation and community resources. Both offer email support on paid plans.
Switching Guide
Already using one of these tools? Here’s what to expect if you switch.
🔄 Switching from HeyGen to Synthesys?
✅ What you’ll gain:
- Lower monthly cost ($20 vs $24 at entry level)
- Native Canva integration for design workflows
- Face swap technology for creative projects
❌ What you’ll lose:
- Ultra-realistic Avatar IV technology
- Voice cloning and Instant Avatar features
- 175+ language support (drops to ~140)
📋 How to switch:
- Export your HeyGen video scripts and download finished videos
- Create a Synthesys account and choose a plan
- Re-create videos using Synthesys avatars and voices
🔄 Switching from Synthesys to HeyGen?
✅ What you’ll gain:
- Most realistic AI avatars on the market
- Voice cloning to create a digital twin of yourself
- 300+ templates and 175+ language support
❌ What you’ll lose:
- Native Canva integration (no direct connection)
- Face swap technology
- Slightly lower pricing at entry level
📋 How to switch:
- Download your Synthesys videos and save your scripts
- Sign up for HeyGen’s free plan to test features
- Upgrade to Creator plan once you’re ready for full features
Verdict final
| Catégorie | Gagnant |
|---|---|
| 💰 Pricing | Synthesys |
| 🤖 Avatar Realism | HeyGen |
| 🎙️ Voice Quality | HeyGen |
| ⚡ Video Speed | HeyGen |
| 🌐 Language Support | HeyGen |
| 👤 Custom Avatars | HeyGen |
| 🆓 Free Trial | HeyGen |
| 🏆 Overall Winner | HeyGen |
🏆 WINNER: HeyGen
HeyGen wins 6 out of 8 categories in this comparison.
Best for: Professional marketing videos, corporate training, personal branding with AI clones
HeyGen and Synthesys serve different audiences in the AI video space.
HeyGen delivers the most realistic AI avatars and best-in-class voice cloning.
Synthesys offers budget-friendly pricing with unique face swap technology.
Synthesys is excellent if you need affordable AI video creation.
However, for professional quality and personal branding, HeyGen is the better choice.
Now, go create some amazing AI videos!
More of HeyGen Compared
Here’s how HeyGen stacks up against other competitors:
HeyGen vs Synthesia
HeyGen wins on: Avatar realism, voice cloning, Instant Avatar feature
Synthesia wins on: Enterprise features, brand recognition, compliance certifications
HeyGen vs Colossian
HeyGen wins on: Avatar variety, language support, voice cloning
Colossyan wins on: Branching scenarios, learning management integration
HeyGen vs Veed
HeyGen wins on: Avatar IA quality, voice cloning, translation accuracy
Veed wins on: General video editing, subtitles, audio tools
HeyGen vs Elai
HeyGen wins on: Avatar realism, voice options, template variety
Elai wins on: Real-time chat feature, interactivity options
HeyGen vs Vidnoz
HeyGen wins on: Professional quality, voice cloning, enterprise features
Vidnoz wins on: Cartoon générateur, free plan limits
HeyGen vs DeepBrain
HeyGen wins on: Avatar variety, Instant Avatar, voice cloning
DeepBrain wins on: Interactive AI Human conversations, PPT to video
HeyGen vs Première heure
HeyGen wins on: Avatar realism, voice cloning, free plan
Hour One wins on: Simpler interface, enterprise support
HeyGen wins on: Avatar quality, template library, team features
D-ID wins on: Photo-to-video conversion, lower starting price
HeyGen vs Virbo
HeyGen wins on: Avatar realism, language support, API access
Virbo wins on: AI montage maker, clip generator
HeyGen vs Fliki
HeyGen wins on: Avatar quality, professional output, voice cloning
Fliki wins on: Blog to video conversion, lower pricing
HeyGen vs Dans la vidéo
HeyGen wins on: AI avatar quality, voice cloning, translation
InVideo wins on: General video editing, media library
HeyGen vs Créativité
HeyGen wins on: Avatar realism, voice variety, enterprise features
Creatify wins on: URL to video conversion, batch processing
HeyGen vs Légendes IA
HeyGen wins on: AI avatars, voice cloning, video translation
Captions AI wins on: Auto-captions, AI editing, lower price
More of Synthesys Compared
Here’s how Synthesys stacks up against other competitors:
Synthesys wins on: Lower price, face swap feature, voice focus
Synthesia wins on: Avatar quality, enterprise compliance, brand trust
Synthesys wins on: Face swap, voice quality, Canva integration
Colossyan wins on: Learning scenarios, avatar realism
Synthesys wins on: AI voice generation, AI humans, face swap
Veed wins on: Video editing, subtitles, free plan
Synthesys wins on: Voice quality, face swap, lower entry price
Elai wins on: Avatar dialogues, real-time chat
Synthesys wins on: Voice quality, face swap technology
Vidnoz wins on: Free plan available, cartoon generator
Synthesys wins on: Price, face swap, Canva integration
DeepBrain wins on: Avatar quality, PPT to video
Synthesys wins on: Lower price, face swap, voice variety
Hour One wins on: Avatar realism, enterprise features
Synthesys wins on: AI humans, voice quality, face swap
D-ID wins on: Photo animation, API, lower entry price
Synthesys wins on: Voice generation, face swap
Virbo wins on: Talking photos, clip generator, avatar export
Synthesys wins on: AI humans, face swap technology
Fliki wins on: Blog to video, free plan, lower price
Synthesys wins on: AI voice quality, AI humans
InVideo wins on: Video editing, template library, free plan
Synthesys wins on: Voice generation, face swap
Creatify wins on: URL to video, batch mode, free plan
Synthesys wins on: AI humans, voice generation, face swap
Captions AI wins on: Auto-captions, AI editing, price
Foire aux questions
What is HeyGen used for?
HeyGen is an AI générateur vidéo that creates professional videos using digital avatars. Businesses use it for marketing videos, training content, product demos, and personalized sales outreach without hiring actors or filming equipment.
Is HeyGen free to use?
HeyGen offers a free tier with 3 credits per month to test the platform. Paid plans start at $24/month for the Creator plan. The free tier lets you create short videos to experience avatar quality before committing.
What does Synthesys AI do?
Synthesys creates AI-generated videos and voiceovers using their AI Humans technology. You type a script, select an avatar and voice, and the platform generates a video in minutes. It also offers text-to-speech and face swap features.
Which is better, Synthesia or HeyGen?
HeyGen offers more realistic avatars and personal cloning features at a lower price. Synthesia has stronger enterprise features and brand recognition. For individual creators and petites entreprises, HeyGen delivers better value.
Is Synthesys AI Studio free?
Synthesys does not offer a free tier. Their Personal plan starts at $20/month. Unlike HeyGen, you need to pay upfront to access any features. They occasionally offer discounts for annual billing.
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