JetBrains released Mellum2.1, an Apache 2.0, 12B mixture-of-experts thinking model with 2.5B active parameters. RL in real repositories lifted its SWE-bench Verified score from 2.0 to 47.0.

In the field of artificial intelligence, machine learning is a branch that uses data and algorithms to imitate human learning. It's an ongoing process in which computers can improve their accuracy ...