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Synthesia

Synthesia is an AI Avatar & Dubbing company founded in 2017 and based in London, United Kingdom. It has raised $535.6M in total funding, most recently a Series E in 2026 at a $4B valuation.

Generates AI avatars and video from text in 160+ languages for enterprise training and communications. Raised $200M Series E in Jan 2026 led by GV; rejected $3B Adobe acquisition offer; adding interactive audio-visual agents.

Used by 70% of FTSE 100 and 90% of Fortune 100 companies; $4B valuation with 65K customers generating AI-powered training content.

synthesia.io AI Avatar & Dubbing

United Kingdomprivate

At a glance

Total raised

$535.6M

last round series e

Headcount

501-1k

approximate · public range

Headquarters

London

United Kingdom

Founded

2017

9 years active

Status

Private

AI Avatar & Dubbing

Latest valuation

Funding history

Total raised

$535.6M

Rounds tracked

6

Latest stage

Series E

Latest valuation

$4B

Date	Stage	Amount	Valuation	Lead investors
Oct 30, 2025	Series E	$200M	$4B	Google Ventures
Jan 15, 2025	Series D	$180M	$2.1B

Products

Synthesia Platform
A browser-based AI video creation platform that transforms text into professional videos using AI avatars and voiceovers in over 160 languages. Users can type scripts, select from 240+ customizable avatars, and generate studio-quality videos in minutes without cameras, actors, or production teams. The platform supports personal avatar creation, voice cloning, AI dubbing with lip-sync across 30+ languages, and one-click video translation for global reach. Designed for enterprise training, onboarding, sales enablement, and internal communications.
AI Video Assistant (Copilot)
An assisted video creation feature that transforms existing materials such as PowerPoint presentations, PDFs, or web links into polished videos with minimal input. Users can upload documents or paste URLs, and the AI automatically structures and generates multi-scene video drafts. This feature accelerates content creation from raw materials to ready-to-share videos, enabling teams to produce training, marketing, and communications content at scale without manual scripting or editing.
Express-2 Avatars
Advanced AI avatar technology featuring hyper-realistic full-body digital presenters with natural facial expressions, gestures, and hand movements. Express-2 combines state-of-the-art voice cloning with a diffusion transformer model to create avatars that gesture like professional speakers. These avatars can deliver scripts in 160+ languages with matched lip-sync, supporting both stock avatars and custom Studio Avatars filmed in premium studios for enterprise-grade quality.
AI Dubbing & Translation
An automated feature that translates and localizes videos across 160+ languages with preserved lip-sync and natural voice consistency. The platform uses AI to dub existing videos with native-quality audio in 80+ languages while maintaining the original speaker's cadence and emotion. Supports one-click translation for enterprise plans, enabling global organizations to scale training and communications content worldwide without re-recording or re-filming for each market.