MODEL REFERENCE / JetBrains

JetBrains/Mellum2-12B-A2.5B-Thinking

JetBrains' reasoning-augmented code MoE (12B total / 2.5B active) that emits explicit <think> chains for debugging, planning, and agentic coding

69.9 LiveCodeBench v6, 58.4 AIME — fits on a single GPU

vLLMmoe12B / 2.5B131,072 ctxvLLM 0.23.0+text

02 / Configure

Configure serving

Choose engine, hardware and deployment options. The command updates as you go.

03 / Understand

Model notes and examples