New ModelsOpen weights
Mellum 2
JetBrains open-sources Mellum 2, a 12B MoE coding model
JetBrains released Mellum 2, a 12B mixture-of-experts coding model with only 2.5B active parameters, trained from scratch by a small team using a three-stage curriculum over 10T tokens. The panel read it as IDE companies converting years of developer-workflow context into model advantage; it is also available on CoreWeave Inference.