Unified-IO2 marks a significant breakthrough in the field of artificial intelligence, featuring autoregressive capabilities that can handle various data types including text, images, audio, and video. The innovative single encoder-decoder transformer model overcomes the limitations of previous models in multimodal data processing. It excels in performance, setting new records in GRIT assessments across 35 datasets, particularly surpassing competitors in image generation. Unified-IO2 employs complex and innovative methods, including shared representation spaces and pretrained visual transformers.