JetBrains Mellum is an open-source focal LLM for code completion that emphasizes specialization, efficiency, and ethical sustainability in the AI landscape. In a livestream discussion, experts Michelle Frost and Vaibhav Srivastav advocate for smaller, task-specific models over larger general-purpose ones, highlighting their benefits in performance, cost, and environmental impact. The session aims to engage developers and researchers in building responsible and effective AI solutions.