# OCR correction

Nace released Drex, a decision model for document processing that, after the parsing engine returns layout-aware Markdown, judges page by page whether text matches the page image, whether a table kept its shape and whether a ticked box survived, and triggers correction only where something is in doubt. On Nace's own parsing leaderboard, NDI plus Drex scores a Parse Index of 0.834, ahead of all 12 parsers tested, including LlamaParse Agentic at 0.820; it improves on the engine alone on OmniDocBench, MDPBench and ExtractBench, and is within noise of it on ParseBench and RealDocBench.

Nace released Drex, a decision model for document processing that, after the parsing engine returns layout-aware Markdown, judges page by page whether text matches the page image, whether a table kept its shape and whether a ticked box survived, and triggers correction only where something is in doubt. On Nace's own parsing leaderboard, NDI plus Drex scores a Parse Index of 0.834, ahead of all 12 parsers tested, including LlamaParse Agentic at 0.820; it improves on the engine alone on OmniDocBench, MDPBench and ExtractBench, and is within noise of it on ParseBench and RealDocBench.