LegalWorld: A Life-Cycle Interactive Environment for Legal Agents
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Computer Science > Computation and Language
Title:LegalWorld: A Life-Cycle Interactive Environment for Legal Agents
Abstract:Civil litigation is inherently a life-cycle process: what a lawyer drafts on day one constrains what unfolds at trial months later. Yet existing legal benchmarks evaluate isolated subtasks, and prior legal-agent simulators reinitialize each scenario from shared ground truth, leaving cross-stage causal dependencies unmodeled. We present LegalWorld, a life-cycle interactive environment that models Chinese civil litigation as a causally connected state chain of five stages (seven sub-scenarios), grounded in 75,309 paired Chinese civil judgments. We pair it with reusable infrastructure (local memory, global case memory, a Skill/Tool library) that keeps each dispute consistent across its full life cycle. Building on this environment, we construct LongJud-Bench to evaluate agent capability across all five connected stages. 18,992 ratings from 217 legal-background evaluators confirm that LegalWorld trajectories are procedurally faithful and role-consistent; and a capability-level cross-model evaluation reveals sharp divergences that aggregate scores cannot expose, with no single backbone leading across consultation, drafting, and courtroom advocacy. Detailed resources will be released publicly.
| Subjects: | Computation and Language (cs.CL) |
| Cite as: | arXiv:2606.18728 [cs.CL] |
| (or arXiv:2606.18728v1 [cs.CL] for this version) | |
| https://doi.org/10.48550/arXiv.2606.18728
arXiv-issued DOI via DataCite (pending registration)
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