BV-BRC: a unified bacterial and viral bioinformatics resource with expanded functionality and AI integration.

The Bacterial and Viral Bioinformatics Resource Center (BV-BRC; https://www.bv-brc.org) is a comprehensive resource supporting research on bacterial and viral pathogens. It currently hosts over 14 million publicly available genomes and 33 high-throughput bioinformatic analysis services with numerous visual analytic tools allowing researchers to analyze their private data, generate comparisons with public data, and share data and results with colleagues. In recent years, the BV-BRC has added several new analysis services to support rapid comparative genomics and epidemiological analysis, viral genome assembly and annotation, viral subspecies classification, wastewater analysis, and molecular docking. In addition, several existing services have been updated to incorporate state-of-the-art tools, including assembly, annotation, taxonomic classification, metagenomic read mapping, and RNA-seq analysis. A new tool, called BV-BRC Copilot, provides an AI-powered natural-language interface that combines large language models with retrieval-augmented generation to guide users through data exploration, analysis workflows, and knowledge integration. With expanded outbreak tracking pages, training and educator engagement, and continued development of novel AI-driven analytics, BV-BRC continues to provide a unified resource to meet the evolving needs of the global research community.