A reproducible benchmark for LLM performance on Indian financial regulatory text — SEBI circulars and RBI master directions.
No public benchmark existed for how LLMs handle Indian financial regulatory text — a domain dense with numerical thresholds, cross-references, and temporal amendments where a confident wrong answer is costly.
From 192 SEBI/RBI documents I built 406 expert-annotated QA items across four task types — regulatory interpretation, numerical reasoning, contradiction detection, and temporal reasoning — with three-round inter-annotator agreement. Twelve LLMs are scored closed-book with bootstrap significance and Wilson confidence intervals, plus a hybrid BM25+dense RAG demo.
Every model clears the 69% human-expert baseline; Gemini 2.5 Flash leads at 89.7%, with statistically distinct performance tiers. The benchmark and leaderboard are live on HuggingFace for reproducible evaluation.
All 12 models scored above the human-expert line — Gemini cleared it by 20.7 points