Synthesia and HeyGen are the two AI avatar video platforms most buyers end up comparing. Both turn a script into a video presented by a realistic AI avatar, both support custom avatars of real people, and both cover well over a hundred languages. So what is the real difference, and which one should you pay for?
In short, Synthesia is built for companies producing structured, on-brand video at scale (training, onboarding, internal comms), while HeyGen is built for speed and reach: marketing, sales outreach, creators and lip-synced video translation. Below we compare them feature by feature, with verified October 2026 pricing.
Last updated: October 14, 2026. Prices and features change often, so always confirm on the official website before you buy.
Key takeaways
- Choose Synthesia for enterprise training, internal communications and teams that need governance, templates and polish.
- Choose HeyGen for marketing, personalised sales videos, social content and translating existing videos with lip-sync.
- On price, both start at $29 per month, but HeyGen’s free plan and $24 annual price make it cheaper to start.
Synthesia vs HeyGen at a glance
| Synthesia | HeyGen | |
|---|---|---|
| Best for | Business training and internal video | Marketing, sales and translation |
| Free plan | Basic: ~10 min watermarked | 3 videos/month, up to 1 minute |
| Entry paid plan | Starter $29/month | Creator $29/month, or $24 billed yearly |
| Next tier | Pro $89/month | Pro from $49/month |
| Team plan | Enterprise (custom) | Business $149/month + $20/seat |
| Languages | 140+ | About 175 languages and dialects (translation) |
| Stock avatars | Large professional library | 700+ |
| Custom avatars | Yes | Yes |
| Standout feature | Templates, brand control, enterprise governance | Lip-synced video translation, personalised videos |
Synthesia overview
Best for: Training, onboarding and internal communications
Starting price: $29/month (Starter); free Basic plan
Synthesia is an enterprise-grade AI video platform. Teams paste a script or import documents and slides, pick an avatar and template, and generate presenter-led videos with voiceover in 140+ languages. Brand kits, collaboration and review workflows, and enterprise security make it easy for large organisations to keep video consistent.
Pros
- Professional, consistent corporate look
- Strong governance and security
- Document and slide to video
- 140+ languages
Cons
- Less playful for social formats
- Costs climb with high volume
- Advanced features on higher tiers
HeyGen overview
Best for: Marketing, sales outreach and translation
Starting price: $29/month, or $24 billed yearly; free plan
HeyGen focuses on fast, engaging avatar video. It offers 700+ stock avatars, quick custom avatars from a short recording, personalised videos for sales outreach, and a standout translation feature that re-voices existing videos in around 175 languages and dialects with lip-sync.
Pros
- Useful free plan
- Excellent lip-synced translation
- Fast custom avatars
- Great for marketing and sales
Cons
- Business plan priced per seat
- Free videos capped at one minute
- Less L&D-focused structure
Avatars and realism
Both platforms offer realistic avatars with good lip-sync and support custom “digital twin” avatars created with the person’s consent. Synthesia’s stock avatars lean professional and corporate, which suits training and internal communications. HeyGen offers a larger and more varied stock library (700+) and makes custom avatars especially quick to create, which suits marketing and creator use.
Winner: HeyGen for variety and speed; Synthesia for a consistent corporate look.Languages and video translation
Synthesia generates videos in 140+ languages from translated scripts, which works well when you plan multilingual content from the start. HeyGen’s video translation can take an existing video, including one with a real human presenter, and re-voice it in another language with matching lip movements, across around 175 languages and dialects.
Winner: HeyGen, especially if you want to localise videos you already have.Features for teams and businesses
Synthesia was designed around organisational needs: templates, brand kits, collaborative workspaces, review and approval, and enterprise security. That makes it easier to roll out across many departments while keeping quality and compliance under control. HeyGen offers team features on its Business plan and is improving quickly, but its centre of gravity is marketing and sales.
Winner: Synthesia for enterprise and L&D teams.Pricing and value
| Plan | Synthesia | HeyGen |
|---|---|---|
| Free | Basic, $0 (about 10 minutes, watermarked) | Free, $0 (3 videos/month, up to 1 minute) |
| Entry | Starter, $29/month | Creator, $29/month or $24 billed yearly |
| Mid | Pro, $89/month | Pro, from $49/month |
| Team / enterprise | Enterprise, custom | Business, $149/month + $20/seat |
Both entry plans cost $29 per month on monthly billing. HeyGen is cheaper on annual billing and its free plan is easier to use for a real test, while Synthesia’s yearly billing saves up to four months on video plans. For large organisations, compare enterprise quotes based on minutes, seats and security requirements.
Winner: HeyGen for individuals and small teams; it depends on the quote for enterprises.Ease of use
Both tools are beginner-friendly: write a script, pick an avatar and generate. Synthesia’s templates make it easy for non-designers to produce consistent corporate videos. HeyGen’s interface is fast and creator-friendly, with quick options for social formats and personalisation.
Winner: Tie. Choose based on whether you value structure (Synthesia) or speed (HeyGen).Who should choose which?
- HR, L&D and internal communications teams: Synthesia.
- Large enterprises with strict security and brand rules: Synthesia.
- Marketing teams and agencies: HeyGen.
- Sales teams sending personalised video outreach: HeyGen.
- Creators and small businesses on a budget: HeyGen, starting with the free plan.
- Companies localising existing videos: HeyGen.
Still unsure? Both have free plans. Create the same one-minute video in each with your own script and compare the result with your team.
Also consider
If neither fits perfectly, look at Colossyan for interactive training with quizzes and SCORM export, or DeepBrain AI for a library of 2,000+ avatars. For a broader overview, see our guide to the best AI avatar video generators for business.
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Frequently asked questions
Is Synthesia better than HeyGen?
Synthesia is better for enterprise training and internal communications thanks to its governance and templates. HeyGen is better for marketing, sales and video translation. Neither is better for every use case.
Which is cheaper, Synthesia or HeyGen?
Both entry plans cost $29 per month on monthly billing, but HeyGen drops to $24 per month on annual billing and offers a more usable free plan, so it is cheaper to start.
Do Synthesia and HeyGen have free plans?
Yes. Synthesia’s Basic plan gives roughly 10 minutes of watermarked video, and HeyGen’s Free plan gives 3 videos per month up to 1 minute long, with no credit card required.
Which has better video translation?
HeyGen, because it can translate existing videos (including real presenters) with lip-sync across around 175 languages and dialects.
Can I create a custom avatar of myself on both?
Yes. Both offer custom avatars from a short recording, with a consent step. Quality and availability depend on the plan.
Final verdict
Choose Synthesia if you are a company producing training, onboarding or internal videos at scale and need governance, templates and a consistent professional look. Choose HeyGen if you create marketing or sales videos, want personalised outreach, or need to translate existing videos with lip-sync, and start free. If you are still undecided, run the same script through both free plans; the right choice usually becomes obvious within an hour.
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