A Coding Guide to Google Research’s Kauldron: Configs That Are Plain Data, Components Wired by String, and a JAX Trainer You Can Read End to End

Legal Research Bench (LRB) introduces 413 expert-written U.S. legal research questions to measure the end-to-end reliability of language model agents in complex legal workflows. Simultaneously, Google Research's Kauldron provides a JAX training library designed for research velocity. It utilizes konfig for plain data dictionaries, kontext for string-path component wiring, and ktyping for runtime shape checks, allowing researchers to read the JAX trainer end to end while maintaining modularity and strict configuration management.