OmniChar

OmniChar is an open source studio for building AI characters that stay consistent across image and video models. A user builds a character once, from one to three photos, and the result is saved in a portable .char file that carries the same face, body and wardrobe into every model. Each file records how it was made and who it belongs to. A .char file can be loaded in the OmniChar app, used in ComfyUI through free nodes, or called through an SDK and API into video models such as Seedance and Kling. The site also hosts a gallery of community characters that can be downloaded, and a library of importable ComfyUI workflows. Training, generation and export can run on the user's own machine, on NVIDIA or AMD GPUs, with Python 3.11 or later on macOS, Windows and Linux; the local version is free and released under GPL version 3. There is also a hosted cloud version in the browser that generates images and video up to 4K with nothing to install. Cloud use is pay per generation with no subscription. One credit costs one cent, credits do not expire, and new accounts start with 300 free credits. Top ups run from $10 to $1,000. An image costs 2 credits at 1K, or 11 with a character. Video costs 10 credits per second at 480p and 32 per second at 4K. Failed generations are not charged, and building a character usually costs 2 to 3 credits.