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 • 507 • 1
JetBrains/Qwen3.8-3.6-27B-blend-MLX-4bit
Image-Text-to-Text • 27B • Updated • 465 • 3
JetBrains/Qwen3.8-3.6-27B-blend-GGUF
Image-Text-to-Text • 27B • Updated • 2.24k • 11
JetBrains/Qwen3.8-3.6-27B-blend
Image-Text-to-Text • 28B • Updated • 590 • 13
JetBrains/Mellum2-12B-A2.5B-Base-Pretrain
Text Generation • 12B • Updated • 281 • 12
JetBrains/Mellum2-12B-A2.5B-Thinking-SFT
Text Generation • 12B • Updated • 393 • 25
JetBrains/Mellum2-12B-A2.5B-Instruct-SFT
Text Generation • 12B • Updated • 388 • 14
JetBrains/Mellum2-12B-A2.5B-Thinking
Text Generation • 12B • Updated • 2.07k • 340
JetBrains/Mellum2-12B-A2.5B-Instruct
Text Generation • 12B • Updated • 4.02k • 86
JetBrains/Mellum2-12B-A2.5B-Base
Text Generation • 12B • Updated • 23.9k • 26
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-MXFP4_MOE
Text Generation • 12B • Updated • 1.04k • 10
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-Q4_K_M
Text Generation • 12B • Updated • 117k • 18
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-Q6_K
Text Generation • 12B • Updated • 542 • 8
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-Q8_0
Text Generation • 12B • Updated • 220k • 7
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-BF16
Text Generation • 12B • Updated • 106 • 2
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-MXFP4_MOE
Text Generation • 12B • Updated • 400 • 13
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-Q4_K_M
Text Generation • 12B • Updated • 2.69k • 46
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-Q6_K
Text Generation • 12B • Updated • 754 • 12
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-Q8_0
Text Generation • 12B • Updated • 617 • 22
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-BF16
Text Generation • 12B • Updated • 85 • 6
JetBrains/Mellum-4b-dpo-python-gguf
4B • Updated • 34 • 5
JetBrains/Mellum-4b-dpo-python
Text Generation • 187k • Updated • 129 • 10
JetBrains/Mellum-4b-dpo-all-gguf
4B • Updated • 130 • 11
JetBrains/Mellum-4b-dpo-all
Text Generation • 187k • Updated • 281 • 12
JetBrains/Mellum-4b-sft-all
Text Generation • 4B • Updated • 727 • 16
JetBrains/Mellum-4b-sft-all-gguf
4B • Updated • 87 • 7
JetBrains/Mellum-4b-sft-kotlin-gguf
4B • Updated • 51 • 6
JetBrains/Mellum-4b-sft-kotlin
Text Generation • 4B • Updated • 104 • 22
JetBrains/Mellum-4b-sft-python
Text Generation • 4B • Updated • 157 • 56
JetBrains/Mellum-4b-sft-python-gguf
4B • Updated • 134 • 45