Ovis-Image Technical Report
Authors: name: Guo-Hua Wang; name: Liangfu Cao; name: Tianyu Cui; name: Minghao Fu; name: Xiaohao Chen; name: Pengxin Zhan; name: Jianshan Zhao; name: Lan Li; name: Bowen Fu; name: Jiaqi Liu; name: Qing-Guo Chen
Published: 2025-11-28 08:42:31

Abstract: We introduce Ovis-Image, a 7B text-to-image model specifically optimized for high-quality text rendering, designed to operate efficiently under stringent computational constraints. Built upon our previous Ovis-U1 framework, Ovis-Image integrates a diffusion-based visual decoder with the stronger Ovis 2.5 multimodal backbone, leveraging a text-centric training pipeline that combines large-scale pre-training with carefully tailored post-training refinements. Despite its compact architecture, Ovis-Image achieves text rendering performance on par with significantly larger open models such as Qwen-Image and approaches closed-source systems like Seedream and GPT4o. Crucially, the model remains deployable on a single high-end GPU with moderate memory, narrowing the gap between frontier-level text rendering and practical deployment. Our results indicate that combining a strong multimodal backbone with a carefully designed, text-focused training recipe is sufficient to achieve reliable bilingual text rendering without resorting to oversized or proprietary models.