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Synthesia

Synthesia is an AI Avatar Video 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.

Synthesia, founded in London in 2017 by Victor Riparbelli, Steffen Tjerrild, Matthias Niessner, and Lourdes Agapito, turns typed scripts into studio-quality video presented by AI avatars in 140+ languages. The platform serves enterprise training, onboarding, sales enablement, and internal communications, and is used by a large share of the Fortune 100. In January 2026 it raised a $200M Series E led by GV at a roughly $4B valuation.

The category-defining enterprise AI avatar platform, used across most of the Fortune 100 and valued at roughly $4B.

synthesia.io AI Avatar Video

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 Video

Latest valuation

Funding history

Total raised

$535.6M

Rounds tracked

5

Latest stage

Series E

Latest valuation

$4B

Date	Stage	Amount	Valuation	Lead investors
Jan 26, 2026	Series E	$200M	$4B	Google Ventures
Jan 14, 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 140 languages. Users type scripts, select from hundreds of 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, and one-click translation for global reach. Designed for enterprise training, onboarding, sales enablement, and internal communications.
AI Video Assistant
An assisted creation feature that turns existing materials such as PowerPoint decks, PDFs, or web links into polished multi-scene videos with minimal input. Users upload documents or paste URLs and the AI automatically structures and drafts the video. The feature accelerates content creation from raw materials to ready-to-share output, letting teams produce training, marketing, and communications content at scale without manual scripting or editing, then refine scenes in the standard editor.
Express Avatars
Synthesia's advanced AI avatar technology featuring hyper-realistic digital presenters with natural facial expressions, gestures, and hand movements. The models pair state-of-the-art voice cloning with a diffusion-based rendering approach so avatars gesture like professional speakers. Avatars deliver scripts across many languages with matched lip-sync, supporting both stock avatars and custom Studio Avatars filmed in premium studios for enterprise-grade quality and brand consistency across large content libraries.
AI Dubbing & Translation
An automated feature that translates and localizes videos across many languages with preserved lip-sync and natural voice consistency. The platform dubs existing videos with native-quality audio while maintaining the original speaker's cadence and emotion. One-click translation on enterprise plans lets global organizations scale training and communications content worldwide without re-recording or re-filming for each market, cutting localization cost and turnaround dramatically.