BACI is a detailed international trade database covering more than 200 countries and 5,000 products between 1994 and 2007. It reconciles trade data reported by over 150 countries to the United Nations Statistics Division via the COMTRADE database. The database addresses discrepancies between import and export values reported by different countries, using statistical methods to estimate CIF/FOB ratios and adjust for transport costs. BACI provides consistent unit values and quantities, allowing for more reliable trade analysis. It is available for COMTRADE users in different classifications (HS92, HS96, SITC) on the CEPII website. The methodology involves estimating CIF rates using gravity-type equations, evaluating the reliability of country reports, and using weighted averages to reconcile mirror flows. BACI is particularly useful for analyzing trade patterns, country specialization, and trade policy. It is freely available and widely used in CEPII research for its product-level detail, geographical coverage, and reliable unit values. The database helps improve the accuracy of trade data by reconciling discrepancies and providing consistent measures of international trade flows. BACI is especially suited for analyzing trade prices and has been used in various studies on trade specialization, competition, and economic policies. The database is available in different versions, including HS0, HS1, and SITC, covering different time periods and product classifications. BACI is an important tool for international trade analysis, offering detailed and reliable data for researchers and policymakers.BACI is a detailed international trade database covering more than 200 countries and 5,000 products between 1994 and 2007. It reconciles trade data reported by over 150 countries to the United Nations Statistics Division via the COMTRADE database. The database addresses discrepancies between import and export values reported by different countries, using statistical methods to estimate CIF/FOB ratios and adjust for transport costs. BACI provides consistent unit values and quantities, allowing for more reliable trade analysis. It is available for COMTRADE users in different classifications (HS92, HS96, SITC) on the CEPII website. The methodology involves estimating CIF rates using gravity-type equations, evaluating the reliability of country reports, and using weighted averages to reconcile mirror flows. BACI is particularly useful for analyzing trade patterns, country specialization, and trade policy. It is freely available and widely used in CEPII research for its product-level detail, geographical coverage, and reliable unit values. The database helps improve the accuracy of trade data by reconciling discrepancies and providing consistent measures of international trade flows. BACI is especially suited for analyzing trade prices and has been used in various studies on trade specialization, competition, and economic policies. The database is available in different versions, including HS0, HS1, and SITC, covering different time periods and product classifications. BACI is an important tool for international trade analysis, offering detailed and reliable data for researchers and policymakers.