Model comparison
Compare Avatar V and Express-3 using the same provider-sourced ai avatars & digital humans rubric. No mystery score and no invented benchmark ranking.
Facts checked September 4, 2026
Quick take
HeyGen's rendered avatar model for producing polished presenter videos from a short identity recording, script, or supplied audio.
This is rendered video, not a realtime digital person. Establish explicit identity and voice consent and confirm avatar eligibility, 4K pricing, queue time, retention, and API engine selection.
Synthesia's business-video avatar model for script-aware speech, gestures, body motion, and multilingual presenter content inside a complete editor.
A plan can include Express-3 without including every API or custom-avatar feature. Confirm video limits, avatar consent, voice rights, brand workflow, downloads, and enterprise controls.
Compare the published facts
Values use each provider's own published units and limits. A blank means the provider did not publish a directly comparable value in the sources reviewed.
| AI avatars & digital humans | Avatar V | Express-3 |
|---|---|---|
| Price basisA representative current subscription, credit, minute, or generated-second price with its route identified. | From $0.05 / generated second via API | Included in plans; paid subscriptions from $29/month |
| Delivery modeRealtime interactive streaming or an asynchronously rendered video. | Asynchronously rendered video | Platform-rendered presenter video |
| Source inputsImages, recordings, scripts, audio, prompts, or preset avatars accepted by the product. | 15-second recording or photo avatar; script or audio | Script plus stock, builder, or approved custom avatar |
| Output & limitsPublished resolution, frame rate, session length, clip length, or other practical production limit. | 720p, 1080p, or 4K routes; provider describes 25 fps rendering | Plan-based video minutes; standalone model limits not published |
| Languages & voicesPublished language support and whether teams can bring or clone a voice. | 177+ languages and dialects across HeyGen products | 160+ languages in the Synthesia platform |
| Performance controlGestures, emotion, direction, motion prompts, multi-speaker support, or similar controls. | Custom motion, multi-angle behavior, and long-form delivery | Lip sync, gestures, body motion, and script-aware sentiment |
| Where to use itDirect API, widget, editor, conferencing integration, or other first-party access route. | HeyGen editor and video-generation API | Synthesia editor; API availability depends on plan |
How to choose
Start with the job you need to complete, then validate cost, access, and policy details on your exact provider route.
Avatar creation involves identity, voice, and consent-sensitive media. The reviewed Avatar V pages do not provide one complete model-specific retention or training-use promise; review current HeyGen consent, privacy, and enterprise terms.
Provider and API links
Synthesia says customer inputs and outputs are not used to pre-train its models. Customer-directed fine-tuning and approved custom-avatar workflows are separate; follow consent and biometric-data requirements.
Provider and API links
Frequently asked questions
Avatar V: HeyGen's rendered avatar model for producing polished presenter videos from a short identity recording, script, or supplied audio. Express-3: Synthesia's business-video avatar model for script-aware speech, gestures, body motion, and multilingual presenter content inside a complete editor.
Consider Avatar V when your priority is Localized marketing and training videos. Consider Express-3 when your priority is Multilingual training and internal communication. Test both with your own data and provider route before committing.
No. This comparison aligns provider-published facts for the AI avatars & digital humans category. It does not claim a universal winner or combine incompatible third-party benchmark scores.
