How to detect changes in Non-disclosure Agreements saved as Word documents?

Question

Hi,

my use case is processing changes to NDA documents. Amendments are made by either party and those changes need to be compared against previous similar changes and also a playbook.

How to detect changes in a Word document where the changes are made and annotated?

Once a changed section is detected, the original and the new changed section needs to be submitted to an LLM and it should respond with an acceptable change.

I think this latter stage requires a RAG solution. Are there any preferred models for the legal domain?

Thanks