Data Prep Kit accelerates unstructured data preparation for LLM app developers. Developers can use Data Prep Kit to cleanse, transform, and enrich use case-specific unstructured data to pre-train LLMs, fine-tune LLMs, instruct-tune LLMs, or build retrieval augmented generation (RAG) applications for LLMs. Data Prep Kit can readily scale from a commodity laptop all the way to data center scale.

IBM donated Data Prep Kit to LF AI & Data as an incubation-stage project in April 2025.