Enhance README with project details and live demo link

Added project overview, goals, features, and access limitations to README.

Author: DiegoIEC

README.md

@@ -1,5 +1,24 @@
 # AI_stats_measurement
-Pilot project for measuring official statistics in AI
+Pilot project for measuring official statistics in AI,
+
+🔗 Live demo: https://ai-stats-measurement.lab.sspcloud.fr/
+
+# Overview
+This project explores the reliability of Large Language Models (LLMs) when answering questions based on official statistical data. It compares model responses against trusted sources such as National Statistical Institutes (NSIs).
+
+# Goal
+The goal of this project is to assess whether publicly available data from NSIs is machine-readable and findable. The aim is to identify whether NSIs need to take action to improve the machine-readability and discoverability of their data to better support AI systems.
+
+
+# Features
+- Analytics dashboard
+Evaluate model performance using metrics such as ARR (Accuracy Rate Ratio) per NSI and per model.
+- Response inspection
+Load and review all responses for a given prompt.
+
+# Access & Limitations
+Submitting new prompts is currently limited to CBS researchers only.
+Public users can explore results and existing evaluations.
 
 [![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=SNStatComp_AI_stats_measurement&metric=alert_status)](https://sonarcloud.io/summary/new_code?id=SNStatComp_AI_stats_measurement)