HeyGen vs Synthesia: Which AI Avatar Tool Should You Use?
Make AI avatar training videos with Synthesia
HeyGen vs Synthesia: Which AI Avatar Tool Should You Use?
HeyGen vs Synthesia is one of the most common questions for anyone shopping for an AI avatar video generator. Both turn a script into a video with a talking AI avatar. Both have free plans. And at first glance their dashboards and prices look almost the same.
But they are built for different jobs, and the pricing has traps. To compare them fairly, we gave both tools the same task, a short video for a face wash product, and looked at how easy they are to use, how real the avatars look, how many languages they support and what you actually pay.
The Main Difference: Marketing vs Training
The quickest way to choose is to think about what kind of videos you make.
HeyGen leans toward marketing, social media and creators. It has expressive avatars, UGC-style avatars for ads, and video translation in 175+ languages.
Synthesia leans toward corporate training and enterprise teams. It focuses on governance and compliance and has a slide-style editor that feels like PowerPoint, with support for around 140 languages.
Neither one is "better" across the board. They are good at different things.
HeyGen and Synthesia Free Plans
The good news is you don't have to guess. Both HeyGen and Synthesia let you start for free with no credit card. When you sign up for HeyGen, it offers you its paid plans, but you can skip that and stay on the free one.
Our advice: make one or two test videos on both free plans before you pay for anything. You'll learn more from your own test than from any review.
How To Make an AI Avatar Video With HeyGen
For the HeyGen test, we picked the ad and promo option on the dashboard. Here's how it works:
Choose an avatar. Go to public avatars and open the UGC section. We picked an avatar named Morgan. Each avatar has a few different looks to choose from.
Write the script. We typed "write a script for face wash product," and HeyGen wrote the script for us. Click use to add it.
Pick your settings. We chose 15 seconds and portrait format. You can also turn on extra graphic designs and choose captions on or off.
Generate. Hit continue and HeyGen starts making the video.
The whole flow feels like a creative studio built for ads and short social videos. If you want more detail on HeyGen alone, read our full HeyGen review.
How To Make an AI Video With Synthesia
Synthesia was even simpler to start. We used its AI agent and typed one prompt: create a product placement and review video for a face wash product. That's it.
Before it generates, Synthesia shows you an outline of the resources it plans to use for the video. You check it, and if everything looks right, you hit generate video and it starts drafting. That review step is part of why Synthesia works well for companies that need control over what goes into a video.
Avatar Realism, Lip Sync and Languages
This is where most people make their decision. In our test, HeyGen's top avatars looked more lifelike. Gestures, voices and lip sync are strong on both, but on a close-up shot, both still look like AI avatars. Don't expect either one to fool anyone yet.
For AI video translation, HeyGen supports 175+ languages and Synthesia supports around 140. Both cover the major languages, so this only matters if you need less common ones. If you're curious how far AI presenters have come, see our post on AI influencers.
HeyGen Pricing vs Synthesia Pricing
Here are the plans shown in the video:
Synthesia: Free, Starter at $29, Pro at $89, and Enterprise with custom pricing
HeyGen: Free, then $29, $49 and $149 plans
Entry prices look almost the same, around $20 to $30 a month. Prices change often, so check each tool's pricing page before you sign up.
The Pricing Trap To Watch For
The real difference isn't the monthly price. It's how each tool meters your usage with credits and minutes. Two plans with the same price can give you very different amounts of video, depending on length, avatar type and features like translation.
Before you upgrade, work out how many minutes of video you actually make in a month, then compare what each plan gives you for that. This matters even more if you're using avatars for a content business, like a faceless YouTube channel or AI video marketing for clients.
Which One Should You Choose?
Pick the one that matches how you work:
Choose HeyGen if you make marketing videos, ads, UGC-style content or social media videos. It feels like a creative studio and its best avatars look more real.
Choose Synthesia if you build training modules for a company. It feels like PowerPoint, and its governance and compliance focus makes it the safer pick for teams.
Still comparing tools? Our best free AI tools list has more options worth testing.
Frequently Asked Questions
Is HeyGen or Synthesia better? HeyGen is better for marketing, ads and social media videos. Synthesia is better for corporate training videos and enterprise teams.
Are HeyGen and Synthesia free? Both have free plans and let you start with no credit card, so you can test them before paying.
How much do HeyGen and Synthesia cost? Synthesia has Free, Starter ($29), Pro ($89) and custom Enterprise plans. HeyGen has Free, $29, $49 and $149 plans. Check usage limits, since both meter usage with credits and minutes.
Which supports more languages? HeyGen supports 175+ languages for video translation. Synthesia supports around 140.
The Bottom Line
HeyGen and Synthesia look alike, but they serve different people. HeyGen is the better AI video generator for marketing and social content. Synthesia is the safer choice for training videos inside a company. Both are free to try, so test them with your own script, then compare credits and minutes, not just the monthly price, before you pay.
This post contains affiliate links. Results vary.
Want the full step-by-step breakdown? Watch the video → https://www.youtube.com/watch?v=vJKcw4e7uEI
