<ul><li>JetBrains has open-sourced Mellum, a specialized 4-billion-parameter language model tailored for software development tasks.</li><li>Mellum is optimized for programming-related tasks like autocompletion and structural understanding of source code in various languages.</li><li>The model was trained using over 4.2 trillion tokens and achieves strong performance in benchmarks, reflecting its focus on structured code understanding.</li><li>JetBrains released Mellum under the Apache 2.0 license to promote transparency, reusability, community collaboration, and pedagogical value, indicating a shift toward specialized, efficient language models for developer tooling.</li></ul>

JetBrains Open Sources Mellum: A Developer-Centric Language Model for Code-Related Tasks

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