Open-Sourcing C&H: A Synthetic Law Firm to Benchmark Agent Continual Learning

mrdrozdov · x · 2026-08-10

Current agent benchmarks usually drop models into isolated task instances, failing to evaluate continual learning and memory. To address this, a team has open-sourced Calderwood & Harkness (C&H), a synthetic law firm environment.

Modeled after real legal work, C&H serves as a persistent environment where agents must perform multiple tasks over the same underlying context. It aims to test whether models can build on their experience—much like a senior engineer or lawyer leveraging a mental map and past playbooks to resolve issues effectively.

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