21CTO

Aug 3, 2026 · Artificial Intelligence

JetBrains’ Open‑Source 12B Code Model Mellum2: Private Deployment and High‑Throughput Over Claude Code

JetBrains released the open‑source 12‑billion‑parameter Mellum2 model, a MoE‑based code AI that delivers private on‑prem deployment, high‑throughput inference, and strong code‑generation benchmarks, positioning it as a fast, specialized alternative to Claude Code and other proprietary models.