Models

Lip-synced faces on the device or in our cloud.

Expression 2
Any character from one portrait: stylized, animal, robot or human.
- Cartoons, animals, robots and people
- Motion generated live from the audio
- One photo is enough
Meet Expression 2
Essence 2
A photoreal person from one portrait, live.
- Runs on iPhone, Android, Mac and Linux
- Made for always-on kiosks and displays
Meet Essence 2

How the models work

Runs on your hardware

iPhone, Android, Mac and Linux, even a Linux PC with no GPU.

Private by design

When the avatar renders on your hardware, its audio and video stay there.

Downloads to Apple devices and Android for some Expression 2 avatars are not available yet; see status.bithuman.ai.

Made in the bitHuman cloud; the finished avatar then runs on your devices.

Essence 2: a photoreal person from one portrait

From one portrait

Essence 2 turns one portrait into a lifelike, lip-synced avatar that renders on the device, on your servers or in our cloud.

Sofia, a photoreal woman with dark hair in a navy blazer

Talk to Sofia

Made with Essence 2

Explore avatars

Expression 2: any character, animated live

From one image

Expression 2 brings any character to life from one image: a person, an animal, a mascot or an object, lip-synced to speech.

Wise Pup, a shaggy white dog in an embroidered jacket

Talk to Wise Pup

Made with Expression 2

Explore avatars

Make one, or build with one

Make your avatar Build an app

Runs on

Measured faster than playback speed on every configuration we publish.

Runs on
Device	Essence 2	Expression 2
macOS · CLI	4.2× playback speed	8.4× playback speed
macOS · Python	6.9× playback speed	8.4× playback speed
Linux · CLI	2.0× playback speed	2.2× playback speed
Linux · Python	1.2× playback speed	2.4× playback speed
Windows · Python	—	1.0× playback speed
iPhone · Swift package	2.1× playback speed	5.5× playback speed
iPhone 18 Pro · Swift package	4.9× playback speed	11.9× playback speed
Android	2.0× playback speed	2.4× playback speed
Web browser (WebGPU)	4.0× playback speed	2.4× playback speed

Playback speed (×) is seconds of avatar video rendered per second, end to end from speech audio in to frame out, one session, unpaced; each figure is measured the way the docs performance data names for that cell (for example, the slowest of three or four runs, or the median of three back-to-back runs), on the SDK build named there. At 1.0× or more an avatar holds a live conversation. Read from docs performance.json (generated 2026-11-06). How we measure

Not in the table: Essence 2 on Windows · Python measured slower than real time on an 8-vCPU Intel i7‑13700F (full body, SDK 2.12.9, Nov 6, 2026). Faster CPUs are not measured yet.

Build with it

An offline license runs characters fully offline on Linux x86_64: Expression 2 now; Essence 1 and Essence 2 come later. Offline licenses are for Business and Enterprise. Offline licensing