IBM has released Granite 4.1, a new family of large language models designed to meet the demands of enterprise applications. The models represent advancements in how foundation models are constructed, with improvements to training methodologies, architecture decisions, and deployment efficiency. Granite 4.1 aims to provide organizations with capable AI systems that can handle complex business tasks while maintaining practical performance characteristics. The release includes detailed documentation of the models' construction process, offering insights into the technical decisions that shaped their development. By publishing information about how these models are built, IBM contributes to the broader understanding of enterprise LLM development practices and helps organizations evaluate whether Granite models suit their specific use cases.