Aria is a multimodal native mixture of experts model that excels in multimodal, language, and coding tasks. It performs exceptionally well in video and document understanding, supporting up to 64K multimodal input, with the ability to describe a 256-frame video in just 10 seconds. The model has 25.3 billion parameters and can be loaded on a single A100 (80GB) GPU using bfloat16 precision. Aria was developed to meet the needs for multimodal data understanding, particularly in video and document processing. It is an open-source model aimed at advancing multimodal artificial intelligence.