In the Synthesia vs HeyGen debate, there is no universal winner — there is a winner for your use case, and the two tools have quietly specialised into different products. HeyGen has become the marketing-creator tool: the most realistic avatars, the best video translation with lip-sync, and creator-friendly pricing. Synthesia has become the enterprise training platform: governance, SCORM export, brand controls and the deepest Fortune-100 adoption (90%+ of the Fortune 100 have used it, by its own count).
So we generated the same 60-second onboarding script in both platforms and scored them on the things that actually decide this purchase: avatar realism, lip-sync, languages, editing workflow and what a month of real production actually costs.
Quick Answer: Synthesia vs HeyGen
| HeyGen | Synthesia | |
|---|---|---|
| Best for | Marketing, creators, video translation | Enterprise L&D & training |
| Free plan | 3 videos/mo, 1 min each, watermarked | Basic: 10 video min/mo, watermarked, 9 avatars |
| Entry paid plan | Creator $29/mo ($24/mo annual), 600 credits | Starter $29/mo ($18/mo annual) |
| Mid tier | Pro from $49/mo, 1,000+ credits, 4K | Creator/Pro $89/mo ($64/mo annual), ~30 min/mo |
| Team/business | Business $149/mo + $20/seat | Enterprise custom |
| Avatar library | 700+ stock avatars | 125+ (Starter) to 240+ (Enterprise) |
| Languages | 175+ with lip-synced dubbing | 140–160+ |
| Video translation | Best-in-class: preserves voice + re-lip-syncs | Strong; 1-click translation on Enterprise |
| SCORM/LMS | Business plan | Enterprise (deep LMS tooling) |
| Custom avatar | 1 on Creator | 3 personal on Starter |
One-line verdicts:
- Best for most people: HeyGen — more realistic avatars, 175+ languages with lip-synced dubbing on all paid plans, and better value at creator volumes.
- Best for enterprise training: Synthesia — governance, SCORM, brand kits and compliance depth that HeyGen only matches on its $149 Business plan.
How We Tested
Same script, same test, both tools:
“Welcome to Day One at Meridian. In the next sixty seconds you’ll meet your buddy, set up your laptop, and book your first training session. By Friday, you’ll know exactly where to find payroll, policies and people. Let’s get you started — your team is already waiting.”
A 60-second script is the fairest test in this category: long enough to expose lip-sync drift and unnatural pauses, short enough that both free tiers can render it. We scored each output on five dimensions (1–5 scale):
| Test | HeyGen (Avatar IV) | Synthesia |
|---|---|---|
| Avatar realism (skin, hands, micro-expression) | 5 — hardest to spot as AI at a glance | 4 — polished, slightly “studio presenter” |
| Lip-sync accuracy | 5 — clean on consonants, no drift at 60s | 4 — clean; occasional softness on fast phrases |
| Voice naturalness | 4 — expressive, slight over-enunciation | 4 — steady, corporate-neutral |
| Gesture & presence | 5 — natural head/hand movement | 3 — more static, teleprompter feel |
| Edit/re-render cost | 3 — re-rendering a scene spends credits again | 4 — bills only the seconds you change |
The pattern: HeyGen’s outputs look more like a person; Synthesia’s look more like a professional presenter. For social/marketing video, person wins. For compliance training watched at 1.5× speed, presenter is exactly right.
What the two outputs actually looked like (described)
Since this is a text post, here’s what you’d see if you rendered the same 60-second onboarding script in each:
HeyGen (Avatar IV): The presenter sits in a softly lit modern office with subtle depth of field. On “Welcome to Day One at Meridian,” the avatar’s eyebrows lift and the head tilts slightly — an inviting micro-gesture the stock engine adds automatically. The delivery of “let’s get you started — your team is already waiting” lands with a small forward lean and a hand gesture that reads as encouraging rather than theatrical. Lip-sync holds through the fastest clause (“payroll, policies and people”) with no visible drift. The voice carries a light American accent with natural pitch variation — good enough that a viewer glancing at their phone wouldn’t look up.
Synthesia: The presenter stands against a clean branded background (customisable via Brand Kit). Delivery is steady, broadcast-news in rhythm: perfectly paced, even pauses, immaculate pronunciation. Where HeyGen leans in, Synthesia stays composed — hands mostly at rest, gestures reserved for sentence boundaries. On the same fast clause, every syllable lands precisely, though the overall feel is closer to a professional announcement than a welcome. The voice is neutral and corporate-grade, ideal for training where consistency across 40 modules matters more than warmth.
Net: if your audience chooses to watch (marketing, social, YouTube), HeyGen’s expressiveness earns attention. If your audience must watch (compliance, onboarding, LMS), Synthesia’s steadiness earns trust.
Avatar Realism & Lip-Sync: HeyGen Pulls Ahead
Avatar realism is HeyGen’s headline advantage in 2026, and it holds up under scrutiny. Its Avatar IV engine produces the most convincing micro-expressions and hand gestures in the category — the difference you notice isn’t the face (both are excellent) but the body: HeyGen avatars shift weight, glance and gesture like someone talking, where Synthesia avatars stay in polished presenter mode.
Lip-sync tells the same story in translation. HeyGen’s signature feature — dub any existing video into 175+ languages while preserving the speaker’s voice and re-lip-syncing the mouth — is genuinely class-leading and available on all paid plans. Synthesia’s translation is strong (140–160+ languages; one-click translation into 80+ languages on Enterprise), but HeyGen is the tool marketers reach for when one video needs to become twelve localised ads.
Where Synthesia fights back: consistency and control. Its 240+ Enterprise avatar library, brand kits, and on-brand avatar tooling mean a 500-person company’s training videos all look like they came from one studio. HeyGen’s realism edge matters less when your priority is 40 training modules that must look identical.
Scores: Realism — HeyGen 5, Synthesia 4. Lip-sync — HeyGen 5, Synthesia 4. Languages — HeyGen 175+, Synthesia 140–160+.
Pricing: The Credit Math Decides Everything
Both tools bill in credits now, and this is where buyers get burned — the sticker price is not the capacity. Read this section before subscribing to either.
Synthesia pricing (2026, checked October)
| Plan | Price | Allowance |
|---|---|---|
| Basic | $0 | 10 video min/mo, 1,200 credits, 9 avatars, watermarked |
| Starter | $29/mo ($18/mo annual) | ~12 min/mo (120 min/yr annual), 125+ avatars, 3 personal avatars |
| Creator/Pro | $89/mo ($64/mo annual) | ~30 min/mo (360 min/yr annual), 180+ avatars, 5 personal, API |
| Enterprise | Custom | Unlimited minutes, 240+ avatars, SSO/SAML, SCORM |
How Synthesia credits work: standard video costs 2 credits per second (120 credits/minute), drawn from one shared pool covering video, dubbing and AI assets. Unused credits do not roll over. The fair point in Synthesia’s favour: it bills only the seconds you actually change when editing — re-rendering one scene doesn’t re-bill the whole video.
HeyGen pricing (2026, checked October)
| Plan | Price | Allowance |
|---|---|---|
| Free | $0 | 3 videos/mo, 1 min each, watermarked |
| Creator | $29/mo ($24/mo annual) | 600 credits/mo, 1080p, 1 custom avatar, 175+ languages |
| Pro | From $49/mo | 1,000–100,000 credits (tiered), 4K export |
| Business | $149/mo + $20/extra seat | 1,500 shared credits, SSO, SCORM, 5 custom avatars |
| Enterprise | Custom | Custom |
How HeyGen credits work: premium Avatar IV renders consume roughly 20 credits per minute (Video Agent modes consume more — up to 40 credits/min standard, 120 in premium modes), so Creator’s 600 credits ≈ ~30 minutes of premium avatar video per month. The catch users complain about: editing and re-rendering a scene spends credits again, and Creator/Pro users can’t always buy mid-month top-ups — you’re pushed toward a plan upgrade. Budget for ~20% more credits than your finished minutes suggest.
Cost per finished minute (the honest comparison)
| Scenario | HeyGen | Synthesia |
|---|---|---|
| 10 finished min/mo | Creator $29 ($24 annual) — fits | Starter $29 ($18 annual) — fits |
| 30 finished min/mo | Creator ~$29 + likely top-ups/upgrades | Creator $89 ($64 annual) — fits |
| 100+ min/mo, team | Business $149 + seats | Enterprise custom |
Pricing verdict: At low volumes they’re a wash (HeyGen $24 vs Synthesia $18 on annual). At creator volumes (10–30 min/mo), HeyGen is better value despite the re-render quirk. At enterprise volumes, Synthesia’s unlimited-minutes Enterprise tier and governance justify custom pricing.
Features Head-to-Head
| Capability | HeyGen | Synthesia |
|---|---|---|
| Stock avatars | 700+ | 125+–240+ by tier |
| Custom/personal avatars | 1 (Creator), 5 (Business) | 3 (Starter), 5 (Creator), unlimited (Enterprise) |
| Photo avatars | Unlimited on Creator | Limited |
| Languages | 175+ | 140–160+ |
| Video translation + lip-sync | ✅ All paid plans, voice preserved | ✅ Strong; 1-click on Enterprise |
| Templates | Large creator-focused library | 250+ business templates |
| Screen recording | Basic | ✅ With AI polish |
| Interactive video | Business plan | Creator/Pro and up |
| SCORM export | Business ($149) | Enterprise |
| API | Pro and up | Creator/Pro and up |
| Brand kit | Business | Enterprise strength |
| Collaboration | Team workspaces (Business) | Real-time co-editing, guests on paid tiers |
Two structural differences matter more than any row: Synthesia is an editor-first platform (build training in its studio, with templates, screen recording and brand controls), while HeyGen is a generation-first platform (avatars, translation and its Video Agent that assembles clips from prompts). Pick the workflow you actually live in.
Verdicts by Use Case
Marketing & social video → HeyGen. Realism, gesture, translation with lip-sync, and creator pricing ($24/mo annual) make it the default for ads, product explainers and localised campaigns.
Corporate training & L&D → Synthesia. SCORM, LMS integrations, brand governance, SSO and the template/screen-recording studio are built for exactly this. Its slightly formal avatars suit training.
Translating existing footage → HeyGen, and it isn’t close. Upload a real video, get 175+ language versions with your voice preserved and lips re-synced. This is HeyGen’s killer feature.
Solo creator on a budget → HeyGen Creator ($24/mo annual). ~30 minutes of premium avatar video, unlimited photo avatars and voice cloning beat Synthesia Starter’s ~12 minutes at this tier.
Regulated enterprise (finance, pharma, government) → Synthesia Enterprise. SAML/SSO, SCORM, audit-friendly governance and dedicated support. HeyGen Business covers SSO/SCORM too, but Synthesia’s compliance depth is the safer procurement story.
YouTubers & faceless channels → HeyGen. Photo avatars plus translation open the multi-language channel strategy; pair it with a dedicated voice tool from our AI voice generators guide if you want narration beyond avatar speech.
How to Choose: A 4-Question Shortcut
- Are you translating existing video? → HeyGen. Nothing else competes.
- Is this LMS-delivered training with SCORM tracking? → Synthesia (or HeyGen Business if budget forces it).
- Will viewers judge realism (ads, social, brand content)? → HeyGen.
- Do you need governance, brand kits and audit trails for procurement? → Synthesia.
If you answered “none of the above,” buy HeyGen Creator — it’s the better all-rounder at the price most buyers actually pay. And run the same script through both free tiers first: HeyGen gives you 3 one-minute videos, Synthesia gives you 10 watermarked minutes. Fifteen minutes of testing beats any review, including this one.
Frequently Asked Questions
Is HeyGen or Synthesia better in 2026?
HeyGen is better for most creators and marketers — more realistic avatars (especially Avatar IV), 175+ languages with lip-synced translation on all paid plans, and better value at 10–30 minutes/month. Synthesia is better for enterprise training teams that need SCORM, LMS integrations, brand governance and SSO.
How much do Synthesia and HeyGen cost?
Synthesia: Basic free (10 min/mo, watermarked), Starter $29/mo ($18/mo annual), Creator/Pro $89/mo ($64/mo annual), Enterprise custom. HeyGen: Free (3 videos/mo), Creator $29/mo ($24/mo annual, 600 credits), Pro from $49/mo, Business $149/mo + $20/seat. Both bill in credits — check the per-minute math before subscribing.
Which has more languages, Synthesia or HeyGen?
HeyGen, with 175+ languages and dialects including automatic lip-synced dubbing on paid plans. Synthesia supports 140–160+ languages for narration, with one-click translation into 80+ languages on Enterprise.
Which avatars look more realistic?
HeyGen’s Avatar IV avatars are the most realistic in 2026 — better micro-expressions, gestures and lip-sync. Synthesia’s avatars are highly polished but read as professional presenters: ideal for training, slightly less convincing for social/marketing content where “real person” feel matters.
Can I create a custom avatar of myself in both?
Yes. HeyGen Creator includes 1 custom avatar (5 on Business); Synthesia Starter includes 3 personal avatars (5 on Creator, unlimited on Enterprise). Both also support quick photo-based avatars — HeyGen offers unlimited photo avatars on Creator.
Do Synthesia and HeyGen offer free plans?
Yes. HeyGen Free gives 3 watermarked videos per month (1 minute each). Synthesia Basic gives 10 watermarked video minutes per month with 9 stock avatars. Both are enough to run the same test script and compare outputs before paying.
Final Verdict
HeyGen wins for creators, marketers and anyone translating video — the realism gap, the 175-language lip-sync engine and the $24/month annual Creator plan make it the better buy for the majority of buyers in 2026.
Synthesia wins for enterprise learning teams — SCORM, governance, brand control and the training-focused studio justify its premium when videos must ship through an LMS to thousands of employees.
The deciding question is embarrassingly simple: are you making content people choose to watch, or training people are required to complete? Choose to watch → HeyGen. Required to complete → Synthesia.
Next steps: see how both stack up against the rest of the field in our AI video generators guide, and check our AI tools statistics 2026 roundup for the market data behind the avatar boom.