Mellum 2 12B A2.5B
JetBrains has released Mellum 2, a new Mixture-of-Experts model designed for coding tasks. The model claims to match Qwen 3.5 9B in coding performance, though its general reasoning capabilities are reportedly weaker than Qwen 3.5 4B. The models are available on Hugging Face, with a technical report detailing their performance. AI
IMPACT Provides a new open-source model option for coding tasks, potentially improving developer productivity.