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

JetBrains releases Mellum2, a 12B-parameter Mixture-of-Experts model trained from scratch on text and code, with 2.5B active parameters per token, under Apache 2.0 license. It is optimized for low-latency inference and targets routing, RAG, sub-agents, and private deployment.

From the source
Mellum2 is a 12B-parameter Mixture-of-Experts model trained from scratch on natural language and code.
huggingface.co

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Announced: 01 Jun 2026 15:45 UTC
Detected: 03 Aug 2026 21:12 UTC (+63d after)
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