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Introducing Mellum2: A 12B Mixture-of-Experts Model by JetBrains

Hugging Face · Hugging Face Blog · Jun 01, 2026 · Product Launches

JetBrains released Mellum2, a 12B mixture-of-experts model, on Hugging Face.

JetBrains announced Mellum2, a 12-billion-parameter mixture-of-experts model published via the Hugging Face Blog. As a continuation of JetBrains' code-focused model line from a recognized power player, it signals continued investment in specialized open models for developer tooling, though no article body was provided to assess benchmarks or licensing details.

jetbrains open-models mixture-of-experts code-models huggingface

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