Baidu Introduces 'Unlimited OCR' with Constant Memory Use for Multi-Page Documents

Baidu researchers have developed 'Unlimited OCR,' a model capable of processing dozens of document pages in a single pass with constant memory and speed, regardless of text length. This is achieved through a redesigned attention mechanism called Reference Sliding Window Attention (R-SWA). The model, built on Deepseek OCR, uses a 3-billion-parameter Mixture-of-Experts architecture and scores 93.92% on OmniDocBench v1.6.