Synthesia vs HeyGen for Startups (2026): Which AI Video Tool Fits Sales and Training?

Synthesia suits startups that make training, onboarding and explainer videos and want a consistent AI presenter. HeyGen suits founders making short sales videos, outreach clips and translated versions of one video. Both have free plans. Pick by the video you make most: training points to Synthesia, sales clips to HeyGen. The P.I.T.C.H. Formula closes the deal the video opens.

Last updated October 2026 · By Jason Lim

Synthesia and HeyGen are the two most-compared AI video tools for founders who need a polished presenter without a camera, crew or studio. Both turn a written script into a shareable video with AI avatars. This review compares both on the founder task: make a 60–90 second sales or product explainer video from a script, then a translated version for a second market. This review is part of the guide to best AI tools for startups at authorjason.com.

How we tested

The task: make a 60–90 second sales or product explainer video with an AI presenter from a written script, then a translated version for a second market, using each tool’s documented workflow. Our hands-on test will run this exact task on each tool’s free plan or trial, using only what the free tier includes. For this review we also checked every price and plan limit on each vendor’s own pricing page (October 2026) and consolidated the most common praise and complaints from verified reviewers on G2 and Capterra. We add first-hand results and screenshots only after the test is complete. Note: Synthesia’s free Basic plan allows 10 minutes of video per month but adds a watermark and does not allow downloads. HeyGen’s free plan caps videos at 1 minute — a 90-second video requires the Creator plan or must be split into two parts.

Synthesia vs HeyGen at a Glance

Same starting price, different strengths. The free-plan limits define which task each tool can complete without paying.

Prices and plan limits checked October 2026 on each vendor’s pricing page. Confirm before you buy.

The Founder Task: a 90-Second Sales Video from a Script

As Jason puts it at authorjason.com, the first 15 seconds of a sales video decide whether the buyer keeps watching — and a stiff AI avatar loses them before the offer lands.

On Synthesia (free plan or Starter): go to Videos, select an avatar from 230+ options, paste your script into the slide text field, choose a voice in the target language, and click Generate. For the translated version, use the Translate feature to select a second language — Synthesia re-lips the avatar automatically. On the free plan, the 90-second video stays under the 10-minute monthly limit but is watermarked and cannot be downloaded; the Starter plan ($29/month) removes both restrictions.

On HeyGen (Creator plan, $29/month required): go to Video, select an avatar, paste your script, choose a voice, and generate. HeyGen’s Video Translation feature converts the finished video into a second language with re-lipped audio in minutes. The free plan’s 1-minute cap prevents the full 90-second task — either split it into two clips or upgrade.

Verdict for this task: Synthesia makes the full 90-second video on its free plan (watermarked, no download); HeyGen needs the Creator plan at $29/month or two clips.

The quickest way to judge fit is to run this exact task on each tool’s free plan or trial before you pay.

The tool makes the video. The Future of Selling System writes the script that closes the deal — for $19/month ($0.63/day).

How Much Do HeyGen and Synthesia Cost?

As Jason puts it at authorjason.com, the tool that costs more per video is not always the more expensive choice — it depends on how many videos you make and whether you need downloads.

Synthesia pricing: Free (Basic) at $0 — 500 credits/month, 10 minutes of video or dubbing, watermarked, share via link only. Starter at $29/month — 1,250 credits, downloads, logo removal. Pricing page: synthesia.io/pricing.

HeyGen pricing: Free at $0 — 3 videos/month, max 1 minute each, 1 custom avatar. Creator at $29/month — 600 credits, videos up to 30 minutes, 1080p, watermark removal. Pricing page: heygen.com/pricing. Both tools carry a credit system: monitor usage early to avoid running out mid-project.

NEW! October 2026

Dear Founders, if you’re making your first AI sales video but the script isn’t converting — you’re not alone.

I know how you feel. I’ve felt it. Here’s what I found: Jeffrey Teo used a repeatable selling system to win 63 customers in 100 days. The Future of Selling System gives you the script structure that works. → dreamaker.club/buyfos

1,000+ founders trained since 2015. Built on 3× rock bottom and 3× rebuilding back. For $0.63/day → dreamaker.club/buyfos

Avatars, Voices and Translation Compared

As Jason puts it at authorjason.com, translation is not just localisation — it is the difference between a sale and a missed opportunity in a market that speaks a different language.

Synthesia offers 230+ stock avatars across nationalities, 120+ languages and voices, and brand kit features (custom fonts, colours, intro/outro) available on paid plans. The multi-language workflow re-lips the avatar to match the spoken language, which reviewers cite as one of Synthesia’s strongest features for training and onboarding standardisation across markets. The most common complaint from G2 reviewers is that voices and avatar lip-sync can feel stiff on longer, emotionally nuanced scripts.

HeyGen offers a comparable avatar library, voice cloning (create a voice from a short recording) and a Video Translation feature that converts a finished video into a second language with re-lipped audio. Reviewers consistently praise the realism of HeyGen’s avatars and voice cloning for short-form sales content. The most common complaint is that the credit system runs out faster than expected for heavy users, and rendering can be slow at peak times.

Using AI Video for Sales: What Works and What Feels Fake

AI video works best for structured, repeatable content: product demos, onboarding sequences, FAQ walkthroughs and training modules where a consistent presenter and script are an advantage. It is less effective for personal outreach where buyers expect an authentic human connection — a generic AI presenter in a cold outreach video can signal low effort.

Two watch-outs for founders: First, disclosure. Buyers increasingly notice AI-generated presenters. Disclosing upfront builds more trust than hoping they do not notice — a buyer who discovers mid-video that the presenter is AI without disclosure will remember the feeling, not the product. Second, consent. Both Synthesia and HeyGen require explicit consent from any person whose likeness is used for a custom avatar. Creating an avatar of yourself, a team member or a public figure without consent violates each vendor’s terms of service.

What Users Say About Synthesia and HeyGen

Synthesia earns 4.6/5 from 2,803 reviews on G2 and 4.6/5 from 314 reviews on Capterra, both checked 7 Oct 2026. Reviewers consistently praise the intuitive editor, wide avatar library and the ability for non-video people to produce polished content. The most common complaints are avatar stiffness on longer scripts and costs climbing with seats and languages. One Marketing Director in marketing and advertising wrote on Capterra: “The voices can still sound a bit robotic on longer narrations or when I need nuanced emotion.”

HeyGen earns 4.8/5 from 1,967 reviews on G2 and 4.7/5 from 319 reviews on Capterra, both checked 7 Oct 2026. Reviewers praise fast, easy creation, realistic avatars and voice cloning for personalised content. The most common complaints are credit costs mounting for heavy users and inconsistent rendering speed. One Account Executive in broadcast media wrote on Capterra: “if you are a heavy user, the expenses can mount when budgets are limited.”

Our read: HeyGen moves faster for short sales content and holds the higher rating. Synthesia handles longer, scripted training content better and gives teams more consistency across languages.

Tools I recommend for AI sales and training videos

Prices and plans checked October 2026 on each vendor’s own page. Check before you buy.

• Synthesia: best for scripted training, onboarding and standardised explainer videos. Consistent avatars, brand kits and 120+ language support on a single plan. Watch-out: the free plan watermarks all videos and does not allow downloads — production use of the 90-second task needs the Starter plan at $29/month.

• HeyGen: best for short sales videos, personalised outreach clips and translated marketing content. Fast creation, realistic avatars and the highest G2 rating in this category. Watch-out: the 1-minute cap on the free plan means the 90-second founder task requires the Creator plan at $29/month.

Tools make the video. The script behind it is what closes the sale.

NEW! October 2026

Dear Founders, you’ve found the right video tool. Now: do you have the script structure that makes a buyer want to reply?

I know how you feel. I’ve felt it. Here’s what I found: Stanley Tan used it to get 45 buyers in 3 hours. The Future of Selling System gives you the exact pitch structure. → dreamaker.club/buyfos

1,000+ founders trained since 2015. Built on 3× rock bottom and 3× rebuilding back. For $0.63/day → dreamaker.club/buyfos

Why AI Video Doesn’t Close the Deal for You

Either tool makes the video, not the sale. It can give you a polished presenter or a clear voice in minutes, but it can’t decide what you say, how you handle a hesitation or whether the buyer trusts what they are seeing. Framing that closes a buyer is the P.I.T.C.H. Formula, not the tool you film it with.

Who Should Pick Which

• Pick Synthesia if you make scripted training, onboarding or standardised explainer videos and need consistent avatars, brand kits and multi-language at scale.

• Pick HeyGen if you make short sales videos, personalised outreach clips or need to translate one video into multiple languages fast.

Once your video is made, the email follow-up that sends it to the right lead at the right time is a separate job. See how MailerLite and Kit compare in the ConvertKit vs MailerLite for startups comparison at authorjason.com.

FAQ

HeyGen vs Synthesia: which is the better choice for startups?

Synthesia is the better choice for startups that make training, onboarding and explainer videos with a consistent AI presenter. HeyGen is the better choice for short sales clips, outreach and translated content. Both start at $29 per month. HeyGen holds the higher G2 rating: 4.8/5 vs Synthesia’s 4.6/5 (October 2026).

Does HeyGen have a free plan?

Yes. HeyGen’s free plan allows 3 videos per month, up to 1 minute each, with 1 custom avatar. Watermark removal is a paid feature. The Creator plan starts at $29 per month.

Can I make an avatar of myself?

Yes. Synthesia and HeyGen both offer custom avatar creation from a short video recording. You must consent to the recording. Each vendor’s platform usage policy governs how the avatar can be used.

Is AI video good for sales outreach?

It can work for short, personalised clips. The risk is that buyers notice AI presenters without disclosure. Disclosing upfront and using video to amplify a clear message is more effective than passing it off as live footage.

Which is better for training videos, Synthesia or HeyGen?

Synthesia is better for training videos. Reviewers cite it for corporate training, onboarding and standardised explainers. Its templates, brand kits and multi-language support suit repeatable team content. The free Basic plan gives 10 minutes a month with a watermark; Starter at $29 per month allows downloads.

The right AI video tool is the one that fits the format you send most. Stanley Tan closed 45 buyers in 3 hours — not because of the video tool, but because the script behind it followed a proven structure. Jeffrey Teo signed 63 customers in 100 days using the same message framework. Leon took a business from $2.5K to $2M+ by knowing exactly what to say once the video got the door open. The Future of Selling System is the structure behind every sales message, regardless of which tool delivers it.

One last thing: Your AI presenter won’t answer “It’s too expensive” or “Let me think about it” for you. The free Founder’s Objection Playbook just below gives you the word-for-word replies, so grab it before your next sales call.

FREE: The Founder’s Objection Playbook

The exact word-for-word replies Stanley Tan used to close 45 buyers in 3 hours. Built from $22M+ in combined sales and 1,000+ founders coached since 2015.

Grab it now. Close your next deal this week.

Sources (prices and ratings checked October 2026): Synthesia pricing · HeyGen pricing · G2: Synthesia · Capterra: Synthesia · G2: HeyGen · Capterra: HeyGen · GetApp: Synthesia · GetApp: HeyGen