GA4 BigQuery Composer is a GPT designed primarily to enhance the precision and efficiency of SQL queries. Developed by OptimizeSmart.com, the GPT works as an SQL query assistant, especially focusing on Google Analytics 4 (GA4) system. To use this tool, users must provide the GA4 table ID where SQL queries will be conducted. One of its functionalities includes calculating user metrics such as the total number of new users in GA4 over a specified time period, such as the last seven days. It's noteworthy that this GPT accommodates users with ChatGPT Plus subscription. Accordingly, this GPT makes it easier for data analysts and experts to write concise and accurate SQL queries while using GA4. To sum up, GA4 BigQuery Composer GPT is a specialized SQL query assistant tool for GA4, aiming to facilitate precise and efficient data query and analysis via improved SQL functions.