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OmniChar

The open .char format for portable, consistent AI characters

Overview

About OmniChar

OmniChar is an open-source AI tool for keeping characters consistent across generated images and video. You build a character once from a handful of photos and it is saved as a portable .char file that carries the face, body, clothes and voice, so the same person appears in every shot without re-attaching reference images or describing the face again in each prompt. The problem it targets is familiar to anyone making AI images or short films: a character drifts from one generation to the next, and the usual fixes are training a separate LoRA for each model or juggling reference images inside a node graph. OmniChar packages that work into one file you can load in the OmniChar app, in ComfyUI through its free nodes, or through the API and the omnichar-sdk.

Inside, a .char file stores your standardised reference photos with an SFace face signature and a DINOv2 subject signature, alongside any LoRA trained from the same photos and an optional voice clip, and it records how it was made and who it belongs to. The app is free under GPL-3.0, runs on your own GPU (NVIDIA on Linux or Windows is the tested path, and CPU works slowly), and its GitHub repository is public and actively updated. People without a GPU can use OmniChar Cloud in the browser, which starts with 300 free credits and then charges per generation from prepaid credits that do not expire. A likeness licensing feature, in early access, stores consent and usage scope inside the .char file and checks it before each generation, and the terms require a real person's consent before a character is built from their likeness.

Pricing

One time purchase, not a subscription

Free tier
  • Self-hosted (GPL-3.0)$0/mo
  • 1,000 credits$10 once
  • 2,500 credits$25 once
  • 5,000 credits$50 once
  • 10,000 credits$100 once

From the vendor pricing page, 2026-11-09

Details

GitHub Stars 582
Forks 74
Data from: GitHub • Website•Updated: Nov 9, 2026
image generationtext-to-imagegeneratecharacteropen-source