QIAS 2026: Overview of the Shared Task on Islamic Inheritance Reasoning

In three linesQIAS 2026 is a shared task evaluating LLMs' ability to reason about Islamic inheritance. Based on MAWARITH (12,500 annotated Arabic cases), it requires full calculation: heir identification and share assignment. 16 teams tested prompting, RAG, and fine-tuning. Results show precise legal interpretation and structured numerical reasoning remain highly challenging.

Summary generated by Claude — human-verified