Synthesia vs HeyGen: Which AI Avatar Video Tool Should You Use?

Which should you pick?

• Best for training and onboardingSynthesia

  G2 calls Synthesia the go to choice for corporate training thanks to its slide style editor G2 comparison ↗, and its plans include surveys, roleplays and SCORM export on Enterprise Synthesia pricing ↗.

• Best for marketing and social videoHeyGen

  G2 recommends HeyGen for social media, campaigns and YouTube G2 comparison ↗.

• Best avatar realismHeyGen

  G2's avatar quality scores are 9.2 for HeyGen and 8.2 for Synthesia G2 comparison ↗.

• Best free planHeyGen

  HeyGen Free gives three videos a month, one custom avatar and one voice clone HeyGen pricing ↗. Synthesia Basic gives 10 minutes, nine avatars and a watermark Synthesia pricing ↗.

• Most languagesHeyGen

  HeyGen lists 175+ languages and dialects on paid plans HeyGen pricing ↗. Synthesia lists 140+ Synthesia pricing ↗.

• Best for enterprise controlsTie

  Synthesia Enterprise adds SAML SSO, brand kits and SCORM Synthesia pricing ↗. HeyGen Business adds SSO and SCORM export, and Enterprise adds SCIM and MFA enforcement HeyGen pricing ↗.

Side by side

From each vendor’s own pages, checked Oct 9, 2026. Prices change often.

Pricing compared

Both start at $29 a month. Synthesia Starter is $29 billed monthly with 1,250 credits, about 12 minutes of video on top of the free allowance, video downloads and logo removal Synthesia pricing ↗. Synthesia Pro is $89 a month with 6,000 credits, about 60 minutes of video, five personal avatars and branded video pages Synthesia pricing ↗. Synthesia says yearly billing saves up to four months but does not list yearly prices Synthesia pricing ↗.

HeyGen Creator is $29 a month, or $24 billed yearly, with 600 credits, videos up to 30 minutes and 1080p export HeyGen pricing ↗. HeyGen Pro starts at $49 a month with 1,000 credits and 4K export, and Business is $149 a month plus $20 per seat, with 60 minute videos and team tools HeyGen pricing ↗.

Both price by credits, so the real number of finished minutes depends on what features you use. Read each plan's credit rules before you commit.

Higher volume is available on both. Synthesia Pro scales up to 48,000 credits at $676 a month Synthesia pricing ↗, and HeyGen Pro scales up to 100,000 credits at $4,300 HeyGen pricing ↗. Most small businesses will never need those tiers, but it is useful to know the ceiling before you build a video library on one platform.

Where Synthesia is stronger

Synthesia is built around learning and internal video. Even its free Basic plan includes templates, roleplays and surveys Synthesia pricing ↗. Pro adds interactive videos and branded video pages, and Enterprise adds SCORM export for learning systems, SAML SSO, brand kits, live collaboration and a dedicated customer success manager Synthesia pricing ↗.

G2's comparison calls Synthesia often the go to choice for corporate training, says its slide style editor suits HR and learning teams, and notes reviewers call its multilingual translation unmatched G2 comparison ↗. Synthesia also has the larger review base on G2, with about 2,376 reviews against HeyGen's 1,194 G2 comparison ↗.

Synthesia sells roleplay learner seats for $29 per learner a month on any plan, which matters if you want staff to practice conversations with an AI character Synthesia pricing ↗.

Where HeyGen is stronger

HeyGen offers more avatars and languages for the money. Paid plans list 700+ stock avatars and 175+ languages and dialects HeyGen pricing ↗, against Synthesia's 125+ avatars on Starter and 140+ languages Synthesia pricing ↗. HeyGen's Pro plan adds 4K export at $49 a month HeyGen pricing ↗.

G2's reviewer named HeyGen the winner on avatar realism, with avatar quality scores of 9.2 against 8.2, and recommended it for social media, campaigns and YouTube G2 comparison ↗. HeyGen's free plan is also more useful for testing a personal avatar, since it includes one custom avatar, three photo avatars and one voice clone HeyGen pricing ↗.

HeyGen's Avatar IV model is limited to one minute per video on Free and 30 minutes on paid plans HeyGen pricing ↗.

Ease of use and what it costs for common jobs

On ease of use the two are close. G2 lists ease of use scores of 92 percent for Synthesia and 93 percent for HeyGen, and its author called the interface test a tie while finding HeyGen's workflow a little more intuitive G2 comparison ↗.

The editors feel different. Synthesia's slide based editor will be familiar to anyone who has built a presentation, which is why G2 says it suits learning and HR teams G2 comparison ↗. HeyGen positions itself more as a complete production platform for marketing content G2 comparison ↗.

Both include an assistant to help with scripts on paid plans. Synthesia lists an AI Video Assistant from Starter up Synthesia pricing ↗. Processing speed is another difference: HeyGen's free plan uses standard processing, and each paid tier is faster HeyGen pricing ↗.

A solo owner who wants a short welcome video for the website can likely do it on a free plan. HeyGen Free allows videos up to one minute HeyGen pricing ↗, and Synthesia Basic includes 10 free minutes but adds a watermark and does not allow downloads until Starter Synthesia pricing ↗.

A small business making a few explainer or social videos a month will usually land on a $29 plan. HeyGen Creator includes 1080p export and videos up to 30 minutes HeyGen pricing ↗. Synthesia Starter includes about 12 minutes of video on top of the free allowance, plus downloads and logo removal Synthesia pricing ↗.

A business building a training library will need more. Synthesia Pro at $89 includes about 60 minutes of video, interactive videos and five personal avatars Synthesia pricing ↗. HeyGen Business at $149 plus $20 per seat adds 60 minute videos, five or more custom avatars and team workspace features HeyGen pricing ↗.

Dubbing existing videos is priced separately in Synthesia's plans, from 16 minutes on Starter to 78 minutes on Pro on top of the free allowance Synthesia pricing ↗.

Consent, quality and what to expect

An avatar of you or a staff member is a likeness of a real person. Get written permission before you create one, agree on how it will be used, and agree on what happens when that person leaves. Ask each vendor how it confirms consent before building a custom avatar or voice clone.

Avatar videos work best for clear, scripted information: product walkthroughs, policy updates, onboarding and multilingual versions of the same message. They are weaker for emotional or personal messages, where viewers notice small mismatches in expression. Keep scripts short and natural, and preview every video before it goes out.

Translation is a major time saver for businesses that serve customers in more than one language. Both tools translate scripts and match lip movements, but a native speaker should still check each version for tone and accuracy.

• Training, onboarding, HR: Synthesia
• Social, ads, YouTube: HeyGen
• Most languages: HeyGen
• SCORM and learning systems: Synthesia Enterprise
• Tight budget with a custom avatar: HeyGen Free or Creator

How we compared them

We used Synthesia's and HeyGen's pricing pages and G2's published comparison, whose author tested both tools and dates the research to November 2025, all checked October 9, 2026 Synthesia pricing ↗ HeyGen pricing ↗ G2 comparison ↗. We have not tested these tools hands on for this comparison yet. Hands on testing is in progress; we'll update this page with results.

Try them

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