bitHuman vs Synthesia
Synthesia: AI video from a prompt, link or file, and Interactive Avatars. bitHuman: real-time avatars that render on the device, on your servers with no GPU, offline or in the cloud.
Last checked October 8, 2026. Each fact links its public source as of the date beside it. Products change; if something here is out of date, tell us and we will correct it.
Side by side
Each row lists what Synthesia and bitHuman state on their own pages.
What it makes
Synthesia
bitHuman
- Essence 2 renders a photoreal person from one portrait, live. (source, as of October 8, 2026)
- Expression 2 renders any character from one portrait, live: people, animals, cartoons, creatures and robots. (source, as of October 8, 2026)
- The talking-video API renders an MP4 of an agent speaking your audio, up to 120 seconds per job. (source, as of October 8, 2026)
Real-time conversation
Synthesia
- Synthesia Interactive Avatars is a plugin you attach to a LiveKit agent; a Synthesia-hosted avatar worker renders it. Its Pipecat plugin is listed as coming soon. (source, as of October 8, 2026)
- Interactive Avatars connect to your own LLM, agent or conversational logic. (source, as of October 8, 2026)
bitHuman
- Bring your own speech-to-text, language model and voice and pay only the avatar rate, or let bitHuman run the whole conversation for one rate. (source, as of October 8, 2026)
Where it runs
Synthesia
- Synthesia stores customer data in the European Union, in data centers in Ireland, and does not use a private or hybrid cloud. (source, as of October 8, 2026)
bitHuman
- Renders on the device: iPhone, iPad and Mac, Android phones, or a browser tab with WebGPU. There is no render server to run. (source, as of October 8, 2026)
- Essence 2 and Expression 2 render live on the processor of an ordinary Linux PC, with no graphics card. (source, as of October 8, 2026)
- Fully offline with an offline license, for Business and Enterprise plans, on Linux and on Macs with Apple silicon. (source, as of October 8, 2026)
- Or bitHuman renders the avatar in its cloud and streams it to a web page, an app or a LiveKit room. (source, as of October 8, 2026)
Developer tools
Synthesia
- Synthesia's Video API generates scripted avatar videos, dubbing, translation and template videos. (source, as of October 8, 2026)
bitHuman
- SDKs and tools for Swift, Android, Flutter, Python, a web embed, a CLI and a REST API. (source, as of October 8, 2026)
- A LiveKit plugin (livekit-plugins-bithuman) gives a LiveKit voice agent an avatar, rendered in the bitHuman cloud or inside your worker. (source, as of October 8, 2026)
- A Pipecat integration (pipecat-bithuman) renders the avatar inside your bot's own process, on your own machine. (source, as of October 8, 2026)
Avatars and languages
Synthesia
bitHuman
- Create your own avatar from one portrait; an Essence 2 avatar takes about 2 hours to create. (source, as of October 8, 2026)
Pricing
Synthesia
Enterprise
Where Synthesia is stronger
- Synthesia turns a prompt, link or file into a video with an AI avatar. (source, as of October 8, 2026)
- Synthesia translates existing videos into more than 130 languages, with voice cloning and lip sync. (source, as of October 8, 2026)
- Synthesia's Video API generates scripted avatar videos, dubbing, translation and template videos. (source, as of October 8, 2026)
- Synthesia offers more than 240 ready-made avatars that work in more than 140 languages. (source, as of October 8, 2026)
- Synthesia makes custom avatars from a photo, a short video or a professional studio session. (source, as of October 8, 2026)
- Synthesia lists SAML/SSO and live team collaboration, and its homepage lists third-party security certifications. (source, as of October 8, 2026)
Where bitHuman differs
- Expression 2 renders any character from one portrait, live: people, animals, cartoons, creatures and robots. (source, as of October 8, 2026)
- Renders on the device: iPhone, iPad and Mac, Android phones, or a browser tab with WebGPU. There is no render server to run. (source, as of October 8, 2026)
- Essence 2 and Expression 2 render live on the processor of an ordinary Linux PC, with no graphics card. (source, as of October 8, 2026)
- Fully offline with an offline license, for Business and Enterprise plans, on Linux and on Macs with Apple silicon. (source, as of October 8, 2026)
- SDKs and tools for Swift, Android, Flutter, Python, a web embed, a CLI and a REST API. (source, as of October 8, 2026)
- A LiveKit plugin (livekit-plugins-bithuman) gives a LiveKit voice agent an avatar, rendered in the bitHuman cloud or inside your worker. (source, as of October 8, 2026)
- A Pipecat integration (pipecat-bithuman) renders the avatar inside your bot's own process, on your own machine. (source, as of October 8, 2026)
- Billed by the exact second in credits, 100 credits = $1: Essence 2 and Expression 2 cost 4 credits a minute in the cloud and 2 on your own hardware or device. (source, as of October 8, 2026)
About this comparison
We compare only facts that a company states on its own public pages, and we link each one. We are bitHuman, so read the sources yourself before you decide.
If you work at a company named here and a fact is wrong or out of date, email hello@bithuman.ai with the page and the source, and we will update it.