Introducing Mellum2: A 12B Mixture-of-Experts Model by JetBrains
• 40
AI & ML interests
Reliable and context-aware coding assistance
Recent Activity
Papers
Mellum2 Technical Report
The Best of N Worlds: Aligning Reinforcement Learning with Best-of-N Sampling via max@k Optimisation
Articles
JetBrains/Mellum2.1-12B-A2.5B-Thinking-GGUF
Text Generation • 12B • Updated • 178k • 138
JetBrains/Qwen3.8-3.6-27B-blend-GGUF
Image-Text-to-Text • 27B • Updated • 10.9k • 36
JetBrains/Mellum2.1-12B-A2.5B-Thinking
Text Generation • 12B • Updated • 5.22k • 174
JetBrains/Qwen3.8-3.6-27B-blend-MTP-MLX-4bit
0.4B • Updated • 1.01k • 8
JetBrains/Qwen3.8-3.6-27B-blend-MLX-4bit
Image-Text-to-Text • 27B • Updated • 1.43k • 11
JetBrains/Qwen3.8-3.6-27B-blend
Image-Text-to-Text • 28B • Updated • 1.1k • 37
JetBrains/Mellum2-12B-A2.5B-Base-Pretrain
Text Generation • 12B • Updated • 304 • 14
JetBrains/Mellum2-12B-A2.5B-Thinking-SFT
Text Generation • 12B • Updated • 4.37k • 25
JetBrains/Mellum2-12B-A2.5B-Instruct-SFT
Text Generation • 12B • Updated • 293 • 15
JetBrains/Mellum2-12B-A2.5B-Thinking
Text Generation • 12B • Updated • 3.16k • 346
JetBrains/Mellum2-12B-A2.5B-Instruct
Text Generation • 12B • Updated • 14.3k • 91
JetBrains/Mellum2-12B-A2.5B-Base
Text Generation • 12B • Updated • 11.3k • 30
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-MXFP4_MOE
Text Generation • 12B • Updated • 712 • 10
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-Q4_K_M
Text Generation • 12B • Updated • 85.7k • 20
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-Q6_K
Text Generation • 12B • Updated • 345 • 9
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-Q8_0
Text Generation • 12B • Updated • 144k • 9
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-BF16
Text Generation • 12B • Updated • 97 • 2
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-MXFP4_MOE
Text Generation • 12B • Updated • 973 • 13
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-Q4_K_M
Text Generation • 12B • Updated • 2.3k • 51
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-Q6_K
Text Generation • 12B • Updated • 223 • 14
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-Q8_0
Text Generation • 12B • Updated • 324 • 23
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-BF16
Text Generation • 12B • Updated • 79 • 6
JetBrains/Mellum-4b-dpo-python-gguf
4B • Updated • 37 • 5
JetBrains/Mellum-4b-dpo-python
Text Generation • 187k • Updated • 119 • 10
JetBrains/Mellum-4b-dpo-all-gguf
4B • Updated • 105 • 12
JetBrains/Mellum-4b-dpo-all
Text Generation • 187k • Updated • 171 • 13
JetBrains/Mellum-4b-sft-all
Text Generation • 4B • Updated • 997 • 17
JetBrains/Mellum-4b-sft-all-gguf
4B • Updated • 258 • 7
JetBrains/Mellum-4b-sft-kotlin-gguf
4B • Updated • 299 • 6
JetBrains/Mellum-4b-sft-kotlin
Text Generation • 4B • Updated • 114 • 22