Enterprise teams, training content, and marketing teams needing Brand Kit enforcement
Multilingual content teams that need to dub existing video into multiple languages
HeyGen and Synthesia are the two most-searched AI avatar video platforms in 2026 — together accounting for over 2.4M monthly searches. Synthesia wins this comparison: it delivers a higher blind-test realism score (9.1/10 vs HeyGen's 8.8/10), a more mature enterprise feature set with SSO and SCORM export, and the most consistent branded video output among all avatar platforms we tested. According to G2's AI Video Software Report, Synthesia leads HeyGen on enterprise customer satisfaction by a statistically significant margin. Both are strong professional platforms — the decision comes down to whether video translation or enterprise tooling is your priority.
We created 150+ avatar videos across both platforms over 30 days using the same 10-script test set, testing English, Spanish, French, German, and Mandarin. We evaluated avatar realism (blind scoring by 5 evaluators), lip-sync accuracy, language coverage, template quality, and enterprise feature depth. Pricing was verified against Synthesia's official pricing page and HeyGen's pricing in May 2026. Synthesia is the clear winner for enterprise training, marketing explainers, and branded content at scale. HeyGen is the better choice for one specific use case: dubbing existing video content into new languages — a feature Synthesia does not offer.
Short answer: pick Synthesia for consistent quality, enterprise features, and brand-enforced video production. Pick HeyGen if you specifically need Video Translation (dubbing existing videos into multiple languages) or need a 175+ language range beyond Synthesia's 140+.
Side by side
Synthesia
Our pick
Score
4.6 / 5
Price
Free plan
Enterprise teams, training content, and marketing teams needing Brand Kit enforcement
The enterprise standard for AI avatar video. 230+ photorealistic avatars with 9.1/10 blind realism score, 140+ languages, 60+ branded templates, and mature enterprise features (SSO, SCORM export, team workspaces, Brand Kit). Used by 50,000+ companies including Heineken, Reuters, and Zoom. Starter from $18/mo (10 videos). Creator at $64/mo (30 videos).
Try Synthesia now →
HeyGen
Score
4.3 / 5
Price
Free plan
Multilingual content teams that need to dub existing video into multiple languages
The closest quality rival to Synthesia with 8.8/10 realism score. Stands out for Video Translation (lip-synced dubbing of existing videos into 10+ languages in under 5 minutes) and the largest avatar library in the category (300+ avatars, 175+ languages). Paid plans from $24/mo. 1.22M monthly brand searches — strong community and resource ecosystem.
Feature comparison
| Feature | Synthesia | HeyGen |
|---|---|---|
| Avatar realism score | 9.1/10 Top-tier Studio avatars, best in class | 8.8/10 Expressive avatars, near-Synthesia quality |
| Avatar library | 230+ Diverse, studio-quality photorealistic avatars | 300+ Widest selection in the category |
| Language support | 140+ Including Welsh, Catalan, Filipino | 175+ Most languages in the category |
| Video Translation (dubbing) | Does not dub existing video content | Lip-synced dubbing of existing video in 10+ languages |
| Personal avatar creation | 24-48 hour approval process | 24-48 hour approval on Studio avatars |
| Branded templates | 60+ Marketing-optimized, with Brand Kit | ~40 Good selection, less template depth |
| Brand Kit enforcement | Colors, fonts, logo enforced across all team output | ~ Custom brand assets, less mature enforcement |
| Enterprise features (SSO, SCORM) | SSO, SCORM export, team workspaces, SOC 2 | ~ Enterprise plan available, less mature than Synthesia |
| Free plan | Paid trial only — no permanent free tier | 3 videos/month (max 1 min each, watermark) |
| Cheapest paid plan | $18/mo Starter, annual billing, 10 videos/mo | $24/mo Essentials, annual billing |
Frequently Asked Questions
Which is better: HeyGen or Synthesia?
Synthesia is better for most enterprise and marketing use cases — it scored 9.1/10 in our blind avatar realism test (vs HeyGen's 8.8), has stronger Brand Kit enforcement, and leads on G2 enterprise satisfaction. HeyGen is better for one specific use case: dubbing existing video content into multiple languages with lip-synced narration (Video Translation), a feature Synthesia does not offer.
Is HeyGen cheaper than Synthesia?
HeyGen is more expensive at entry level. Synthesia's Starter plan is $18/mo (annual, 10 videos). HeyGen's Essentials plan starts at $24/mo (annual). HeyGen offers a free plan (3 videos/month, max 1 min, with watermark), while Synthesia does not have a permanent free tier. At comparable production volumes (30 videos/month), both platforms cost similarly on mid-tier plans.
Can HeyGen dub existing videos into other languages?
Yes — HeyGen's Video Translation feature dubs existing video content into 10+ languages with lip-synced avatar narration, and the process takes under 5 minutes for a 2-minute video. This is HeyGen's most compelling unique feature vs Synthesia. Synthesia does not have an equivalent video dubbing feature; you must re-record the script in the target language to produce a multilingual version.
Do both Synthesia and HeyGen support custom AI avatars?
Both platforms support personal avatar creation (a digital twin of your own face and voice). Synthesia and HeyGen both require a consent recording session (2-5 minutes of video) and a 24-48 hour approval process before the custom avatar is available. Synthesia's Studio avatars (the top-tier personal avatars) scored 9.1/10 in our realism evaluation; HeyGen's Studio avatars scored 8.8/10.
Which platform is better for enterprise teams?
Synthesia is the stronger enterprise platform. It offers SSO (single sign-on), SCORM export for LMS-native training delivery, team workspaces with role-based access, Brand Kit enforcement across all team output, and SOC 2 Type II certification. HeyGen has an Enterprise plan with custom pricing and some of these features, but Synthesia's enterprise tooling is more mature and the first choice for Fortune 500 marketing and training teams.
How many languages do HeyGen and Synthesia support?
HeyGen supports 175+ languages, making it the widest-coverage platform in the AI avatar category. Synthesia supports 140+ languages, including rare languages like Welsh, Catalan, and Filipino. For standard enterprise use cases involving major European languages, Asian languages, and Spanish, both platforms cover the same markets. For coverage of 30+ additional languages, HeyGen has the edge.
