HeyGen vs Synthesia comes down to what you publish. For marketing videos and translation, HeyGen is more flexible, and its first paid plan costs $29/month. For corporate training, Synthesia is more structured and starts at $19/month. For short TikTok Shop product videos, neither one was built for the job. Here's why.

This comparison uses the official pricing pages checked on October 23, 2026. It fixes the outdated prices still floating around, works out the real cost of a 15-second and 30-second vertical clip, and judges each tool with one use in mind: product videos for TikTok Shop. For a wider view of the market, read our comparison of 7 AI UGC video generators (UGC means user-generated content: here, videos that look like a real customer's review).

HeyGen vs Synthesia: the quick verdict

Pick Synthesia for training or internal communication: its Starter plan costs $19/month for about 12 minutes of video. Pick HeyGen for marketing or translation: its Creator plan costs $29/month and includes 700+ video avatars. If you sell or promote products on TikTok Shop, look at a dedicated product video tool first.

The table below puts both tools face to face, with a third column for the TikTok Shop use case. HeyGen and Synthesia prices checked on October 23, 2026 on each official pricing page; third column checked on September 29, 2026.

To place the third column: Klonify is a French tool that generates sales videos for TikTok Shop. From a product link, it writes the script, produces the voiceover and creates the AI influencer who presents the product, from €19 per month. It has no free plan.

What are HeyGen and Synthesia, exactly?

HeyGen and Synthesia are AI avatar video generators. You type a script, and a virtual presenter says it on camera, with no filming. Both are heavyweights: HeyGen reports more than 30 million users (its blog, June 2026), and Synthesia is valued at $4 billion (TechCrunch, January 2026). Both sell mainly to businesses.

HeyGen: the marketing generalist

According to its official announcement of June 25, 2026, HeyGen surpassed $200M in ARR (annual recurring revenue), doubling in eight months. The company reports more than 30 million users in 196 countries.

The same announcement says 85% of the Fortune 100 use HeyGen. These are self-reported figures, not audited ones. Its CEO, Joshua Xu, put it this way: “Crossing $200 million in ARR is an important milestone, but the deeper signal is what our users are telling us.”

If you already lean away from HeyGen, see the best HeyGen alternatives for TikTok Shop.

Synthesia: the corporate video specialist

According to TechCrunch (January 26, 2026), Synthesia is valued at $4 billion after a $200M round led by GV, up from $2.1 billion a year earlier.

Its whole pitch targets training teams and internal communication. Its Enterprise offer, with single sign-on (SSO) and higher API limits, shows who it's built for. For short-form options, check the Synthesia alternatives for TikTok Shop.

HeyGen vs Synthesia pricing: what does it really cost in 2026?

Synthesia is cheaper to start: Starter costs $19/month, versus $29/month for HeyGen Creator. Both bill in dollars and both run on credits. Be careful with comparisons that still show Synthesia Starter at $29 or a “Creator” plan: on October 1, 2026, Synthesia renamed Creator to Pro and changed its credit totals.

Here's what changed, according to Synthesia's October 2026 plan changes in its Help Center. Creator became Pro, at the same price. Pro now has 6,500 credits per month. New Pro 2x, 4x, 6x and 8x tiers offer 12,500 to 48,500 credits. Every self-serve plan includes 500 base credits.

Prices checked on October 23, 2026 on heygen.com/pricing and synthesia.io/pricing; Synthesia credit totals from its Help Center, October 2026.

Synthesia changes these pages often. Open the live pricing page on the day you sign up, and treat any price you read elsewhere (this article included) as a starting point.

The real cost of a 15-second and 30-second clip

Synthesia's pricing page translates Starter into about 12 minutes of video, and Pro into about 60 minutes. On Basic, Starter and Pro, credits are used according to video length. So a 30-second clip eats half a minute of your quota.

In real life, you redo takes: a mispronounced brand name, a gesture that looks off. Each new generation burns credits. Budgeting two generations per published clip keeps you safe. Based on Synthesia prices checked on October 23, 2026:

For HeyGen, the pricing page lists credits per plan (1,000 credits for $49 on Pro) but no single minutes conversion that works for every video type. The only reliable math: generate a 30-second test clip and check how many credits it used.

On commitment: Synthesia says yearly billing saves “up to 4 months,” and HeyGen Creator drops from $29 to $24/month billed annually. Only sign up for a year after a month of real use.

Avatars: which one looks more real on camera?

No official benchmark settles which avatars look more real: you judge it by eye, on your own script. HeyGen bets on choice, with 700+ video avatars from its Creator plan, according to its pricing page checked October 23, 2026. Synthesia focuses first on the polished presenter style of corporate and training videos.

When you compare two clips, check four things:

• The mouth on hard words: brand names, prices, numbers.

• The hands: gestures with no reason behind them give the AI away in two seconds.

• The eyes: an avatar that stares at the lens and never blinks feels off.

• The background: a neutral office or a real living room.

The presenter style works well for a training video. To sell a $20 product on TikTok, it reads more like an ad. On TikTok Shop, your clip sits next to real customers filming reviews on their phones.

English voice and lip sync: which sounds more natural?

Both tools speak English well enough to test. HeyGen claims 175+ languages and dialects (HeyGen blog, June 25, 2026). Synthesia is often credited with about 160 languages in third-party comparisons, a figure we didn't confirm officially. The real question is quality: how each avatar says a dollar price, a brand name and casual contractions.

A voice that sounds read off a teleprompter makes TikTok viewers swipe fast. The most revealing test fits in one line: “This $24.99 vitamin C serum from [your brand] fixed my morning routine, and I'm not even kidding.”

A price, a brand, a contraction, a casual tone. If the avatar stumbles on that line, it will stumble on your product videos too.

How to test both for free in 30 minutes

You can test both without paying. HeyGen gives up to 3 videos per month with no credit card, and Synthesia Basic gives about 10 minutes per month with a watermark, according to their pricing pages checked October 23, 2026. Use the same 30-second script in each tool, then compare both clips side by side.

1. Write a 30-second script about a real product, with a dollar price and a brand name.

2. Create a free account on HeyGen, then on Synthesia.

3. Pick the avatar in each tool that looks most like an ordinary customer.

4. Choose an American English voice and generate the video.

5. Check whether 9:16 vertical export is available on your plan.

6. Write down the time spent and the credits or minutes used.

7. Watch both videos on your phone, sound on, like a TikTok viewer would.

This test costs you nothing and answers better than any comparison, this one included.

TikTok Shop: HeyGen or Synthesia for product videos?

For TikTok Shop product videos, neither HeyGen nor Synthesia is the best default. Both can make an avatar talk, but their pricing is designed for businesses: minutes, seats, long videos. A TikTok sales video is short and vertical, and it has to feel like a real customer's review.

Quick context if you're new. An affiliate creator posts a video with a product link (the orange shopping cart). When a viewer buys through it, the seller pays the creator a commission, at a rate the seller sets.

According to TikTok Shop's Creator Eligibility Policy, dated September 25, 2026, US affiliate creators need at least 1,000 followers, must be 18 or older and based in the US, and must pass identity verification. The threshold shown in your app is the one that counts.

The real issue is volume. Under 5,000 followers, you're automatically enrolled in the TikTok Shop US affiliate creator pilot program. According to that page, dated May 13, 2026, the pilot allows 3 shoppable videos per day and 3 shoppable LIVEs per week. To exit, you need at least 30 days and 5,000 followers, 176 CHR points, one activity condition and a quiz.

Three videos a day is about 90 a month. Done by hand, that pace eats your evenings. That's often where people quit, when the excitement of week one fades. You have three obvious doors:

• Film it yourself: you need the product in hand, light, editing, and you have to show your face.

• Pay UGC creators: every video is negotiated and paid per piece, with delays.

• Use HeyGen or Synthesia: you write every script, tune the voice, fix the format, and pay for a tool priced for training. With retakes, Synthesia Starter covers about 24 clips of 15 seconds, roughly 8 days at the pilot cap.

The door that's left: generate the video from the product instead of writing and filming it. The script, the voice and the person on screen all come from the product link. You keep the two jobs that matter: picking the product and posting every day.

Are you a seller rather than a creator? The math changes. According to TikTok Shop Referral Fees by Category, dated October 8, 2026, the platform takes a 6% referral fee on most categories. To explain a technical product on your listing, a HeyGen presenter video can be enough.

Klonify: TikTok Shop product videos from a link

Klonify is the option to look at if your goal is selling on TikTok Shop. You paste the product link, the tool writes the script, an AI influencer presents the product with an AI voiceover, and you adjust it in the built-in editor. The Standard plan costs €19/month, with no commitment, for up to 15 videos.

The limits to know before you pay. You're billed in euros, so your card may add a foreign transaction fee. Standard gives you 750 credits, and a 10-second clip in 720p on the Nova model uses 100 credits: that's about 7 clips of 10 seconds a month.

To get close to the pilot cap of 3 videos a day, you need Ultra (5,000 credits, about 50 clips of 10 seconds) plus credit packs. Per second of video, Synthesia's credits stretch further. What you pay for here is the work around the clip: the script from the link, the UGC-style presenter, the vertical export. And for a 10-minute training video, Synthesia stays the better pick. To see how it stacks up against another UGC tool, read this head-to-head with Arcads.

Try Klonify on a product you already want to promote: paste its link and generate your first video, then compare it side by side with your HeyGen or Synthesia version. Every plan is cancel-anytime.

HeyGen or Synthesia: which tool for which profile?

The right tool depends on what you publish. Synthesia fits training and corporate videos, HeyGen fits multilingual marketing and translation, and a dedicated product video tool fits TikTok Shop. For many profiles, HeyGen or Synthesia is clearly the right pick, and those profiles are usually companies with a training or marketing team.

Your move for today: run the free 7-step test above with one real product. If you're still torn between more than two tools, the 7-tool comparison linked at the top of this article puts them side by side on the same criteria.

HeyGen vs Synthesia FAQ

The questions that come up most about this matchup are about price, free plans, the October plan change and TikTok. Short version: Synthesia is cheaper to start, HeyGen offers more avatar choice, both bill in dollars, and neither was designed first for TikTok Shop affiliate videos. Here are the details, question by question.

Is HeyGen better than Synthesia?

It depends on the job. HeyGen fits marketing and video translation better, with 700+ video avatars from its $29 Creator plan and 175+ languages claimed (HeyGen blog, June 25, 2026). Synthesia fits training and internal videos, with plans measured in minutes and an Enterprise offer with SSO. For short TikTok Shop product clips, test both free plans before you pay.

Which is cheaper, HeyGen or Synthesia?

Synthesia is cheaper to start: Starter costs $19/month ($9 the first month) for about 12 minutes of video, versus $29/month ($24 billed annually) for HeyGen Creator, according to both pricing pages checked October 23, 2026. On Starter, a 15-second clip costs about $0.40 in one take, or about $0.79 if you budget for retakes.

Does HeyGen or Synthesia have a free plan?

Yes, both have a limited free plan. According to their pricing pages checked October 23, 2026, HeyGen allows up to 3 videos per month with no credit card, and removes the watermark only on paid plans. Synthesia Basic gives about 10 minutes of video per month with a Synthesia watermark. That's enough to compare both on the same script.

Can you use HeyGen or Synthesia videos on TikTok?

Yes, you can post HeyGen or Synthesia videos on TikTok, but both are built for businesses: presenter-style videos and pricing in minutes or seats. Check 9:16 vertical export on your plan before paying. For affiliate videos, TikTok Shop's Creator Eligibility Policy dated September 25, 2026 requires 1,000 followers in the US. The threshold shown in your app is final.

What happened to the Synthesia Creator plan?

On October 1, 2026, Synthesia renamed its Creator plan to Pro, at the same price, according to its Help Center. Pro now includes 6,500 credits per month, and new Pro 2x, 4x, 6x and 8x tiers offer 12,500 to 48,500 credits. Articles still quoting a Creator plan or Starter at $29 are using outdated pricing.

What is the best alternative to HeyGen and Synthesia for UGC product videos?

For product videos that look like a customer review, a dedicated UGC tool fits better. Klonify is a French tool that generates the script from a product link, the voiceover and the AI influencer, from €19/month with no commitment. It has no free plan or trial, videos speak English or French only, and Standard caps each video at 15 seconds.