Mellum is a new large language model (LLM) introduced by JetBrains specifically designed for programming, aiming to elevate AI-driven development tools. Mellum focuses on providing developers with faster, smarter, and more context-aware code completions. By optimizing the model to reduce latency, it offers instant code suggestions more efficiently than many third-party models available in the market. Mellum supports code completion for popular programming languages such as Java, Kotlin, Python, Go, and PHP, with plans to extend support to more languages through JetBrains' early access program. User feedback has validated Mellum's performance, and JetBrains remains committed to privacy, training Mellum exclusively on publicly available, licensed code.