Introducing Mellum2: A 12B Mixture-of-Experts Model by JetBrains
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AI & ML interests
Reliable and context-aware coding assistance
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Papers
Mellum2 Technical Report
The Best of N Worlds: Aligning Reinforcement Learning with Best-of-N Sampling via max@k Optimisation
Articles
JetBrains/Qwen3.8-3.6-27B-blend-MTP-MLX-4bit
0.4B • Updated • 42
JetBrains/Qwen3.8-3.6-27B-blend-MLX-4bit
Image-Text-to-Text • 27B • Updated • 45
JetBrains/Qwen3.8-3.6-27B-blend-GGUF
Image-Text-to-Text • 27B • Updated • 190 • 2
JetBrains/Qwen3.8-3.6-27B-blend
Image-Text-to-Text • 28B • Updated • 19 • 3
JetBrains/Mellum2-12B-A2.5B-Base-Pretrain
Text Generation • 12B • Updated • 270 • 12
JetBrains/Mellum2-12B-A2.5B-Thinking-SFT
Text Generation • 12B • Updated • 360 • 25
JetBrains/Mellum2-12B-A2.5B-Instruct-SFT
Text Generation • 12B • Updated • 298 • 14
JetBrains/Mellum2-12B-A2.5B-Thinking
Text Generation • 12B • Updated • 2.19k • 337
JetBrains/Mellum2-12B-A2.5B-Instruct
Text Generation • 12B • Updated • 2.7k • 84
JetBrains/Mellum2-12B-A2.5B-Base
Text Generation • 12B • Updated • 22.5k • 26
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-MXFP4_MOE
Text Generation • 12B • Updated • 589 • 10
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-Q4_K_M
Text Generation • 12B • Updated • 127k • 15
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-Q6_K
Text Generation • 12B • Updated • 656 • 8
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-Q8_0
Text Generation • 12B • Updated • 238k • 7
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-BF16
Text Generation • 12B • Updated • 77 • 2
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-MXFP4_MOE
Text Generation • 12B • Updated • 559 • 13
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-Q4_K_M
Text Generation • 12B • Updated • 2.6k • 44
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-Q6_K
Text Generation • 12B • Updated • 781 • 12
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-Q8_0
Text Generation • 12B • Updated • 596 • 22
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-BF16
Text Generation • 12B • Updated • 62 • 6
JetBrains/Mellum-4b-dpo-python-gguf
4B • Updated • 39 • 5
JetBrains/Mellum-4b-dpo-python
Text Generation • 187k • Updated • 114 • 10
JetBrains/Mellum-4b-dpo-all-gguf
4B • Updated • 446 • 11
JetBrains/Mellum-4b-dpo-all
Text Generation • 187k • Updated • 317 • 12
JetBrains/Mellum-4b-sft-all
Text Generation • 4B • Updated • 569 • 16
JetBrains/Mellum-4b-sft-all-gguf
4B • Updated • 517 • 7
JetBrains/Mellum-4b-sft-kotlin-gguf
4B • Updated • 55 • 6
JetBrains/Mellum-4b-sft-kotlin
Text Generation • 4B • Updated • 97 • 22
JetBrains/Mellum-4b-sft-python
Text Generation • 4B • Updated • 138 • 56
JetBrains/Mellum-4b-sft-python-gguf
4B • Updated • 124 • 45