OpenMOSS releases MOSS-Image: open-source 5B text-to-image model with native JSON layout control

lmoroney · x · 2026-10-18

OpenMOSS released MOSS-Image (Oct 16, Apache 2.0), a text-to-image model family with a Base model and an SFT version fine-tuned on curated data.

Its standout feature is native layout control: beyond natural-language prompts (up to 4K tokens), you can pass a structured JSON prompt specifying objects, rendered text, and their spatial positions via bounding boxes, with support for controlled layout-based editing.

Other features: compact 5B backbone, strong text rendering, anime and photorealistic styles, training on heterogeneous GPU platforms. Python/Gradio interfaces share a Diffusers pipeline; a live demo, ModelScope weights, and a technical report are available.

Related event: Fudan's OpenMOSS Open-Sources 5B MOSS-Image Text-to-Image Models(14 posts)→

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