How Baidu's newly released Unlimited-OCR transcribes dozens of pages in one forward pass

Baidu has released Unlimited-OCR, an end-to-end OCR model capable of transcribing dozens of pages in a single forward pass using a novel attention mechanism called Reference Sliding Window Attention (R-SWA). This model, based on DeepSeek-OCR, maintains a fixed visual context while allowing generated text to attend only to a sliding window of previous tokens, significantly reducing memory overhead. Benchmarks indicate a performance improvement to 93.92% on OmniDocBench v1.6 compared to DeepSeek-OCR's 87.01%, although independent validation is recommended before final assessments. The model is available under the MIT license on platforms like Hugging Face and ModelScope, making it a valuable tool for practitioners in the OCR domain.