HeyGen vs Synthesia

HeyGen — Application · Private · $500M valuation · 4 of 4 figures sourced  |  Synthesia — Application · Private · $4B valuation · 4 of 4 figures sourced

Relationship

HeyGen's own head-to-head comparison page.

3 of 4 capabilitiesShared product typeLarger scaleSourced competitorCreate synthetic voice and audioCreate images and video

3 of 4 capabilities — Shares avatar video, text to speech and video generation.

Ludbee capability tags · from the product records

Shared product type — Both ship application.

Ludbee product records

Larger scale — Synthesia: $4B valuation, against HeyGen's $500M valuation.

Ludbee scale figures · valuation, market cap or revenue estimate

Sourced competitor — “Why choose HeyGen over Synthesia?”

heygen.com · checked 2026-09-19

Create synthetic voice and audio — Rivals on this job — Turn text into speech, clone or convert a voice, and generate or edit audio and music.

Ludbee needs vocabulary · the scope on the sourced edge

Create images and video — Rivals on this job — Produce and edit images, video and 3D assets — from a prompt, or by editing what you already have.

Ludbee needs vocabulary · the scope on the sourced edge

Aligned comparison

FieldHeyGenSynthesia
Valuation$500M$4B Synthesia has 8.0× more
Employees120600 Synthesia has 5.0× more
Founded20202017 3 yrs earlier
StatusPrivatePrivate match
CategoryApplicationApplication match
Stack layerAPI service, ApplicationApplication
HeadquartersLos Angeles, USALondon, United Kingdom

Capability overlap

Shared · 3

Avatar videoText to speechVideo generation

Not verified for Synthesia · 1

Translation

Recorded for HeyGen. Synthesia’s product records say nothing either way — a missing record is not a missing capability.

Synthesia has no capability HeyGen lacks, among the 3 recorded here.

Products, side by side

Hand-checked pairing

HeyGen

Application

HeyGenApplication

Generates presenter videos from a script using synthetic avatars, including avatars cloned from a person.

HeyGen Video TranslatorApplication

Re-voices an existing video into another language and matches the speaker's lip movement to the new audio.

Synthesia

Application

SynthesiaApplication

Generates presenter-led video from a script using synthetic avatars and voices.

Synthesia APIApplication

Programmatic API for generating synthetic AI-avatar videos, with its own API pricing model separate from the consumer/enterprise app plans.

Synthesia Interactive AvatarsApplication

Real-time conversational AI avatars for embedding live, two-way avatar interactions (beta).

Synthesia Roleplay SessionsApplication

Interactive AI-avatar roleplay for sales, support and manager training conversations, with live coaching.

Synthesia Video TranslatorApplication

Automatic video translation and lip-sync into 80+ languages.

No counterpart

HeyGen sells these in a stack layer with no product recorded for Synthesia yet — nothing on the other side to compare them against.

API service

HeyGen APIAPI service

Hosted API for avatar video generation, translation and voice cloning, billed through the same HeyGen account and credit plans as the core product.

LiveAvatarAPI service

Real-time interactive avatar API with unlimited concurrency, billed per minute of streaming and falling to $0.01/min at the top volume tier.

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