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 • 15
JetBrains/Qwen3.8-3.6-27B-blend-MLX-4bit
Image-Text-to-Text • 27B • Updated • 13
JetBrains/Qwen3.8-3.6-27B-blend-GGUF
Image-Text-to-Text • 27B • Updated • 55 • 2
JetBrains/Qwen3.8-3.6-27B-blend
Image-Text-to-Text • 28B • Updated • 10 • 2
JetBrains/Mellum2-12B-A2.5B-Base-Pretrain
Text Generation • 12B • Updated • 274 • 12
JetBrains/Mellum2-12B-A2.5B-Thinking-SFT
Text Generation • 12B • Updated • 354 • 25
JetBrains/Mellum2-12B-A2.5B-Instruct-SFT
Text Generation • 12B • Updated • 294 • 14
JetBrains/Mellum2-12B-A2.5B-Thinking
Text Generation • 12B • Updated • 2.23k • 337
JetBrains/Mellum2-12B-A2.5B-Instruct
Text Generation • 12B • Updated • 2.73k • 84
JetBrains/Mellum2-12B-A2.5B-Base
Text Generation • 12B • Updated • 21.9k • 26
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-MXFP4_MOE
Text Generation • 12B • Updated • 743 • 10
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-Q4_K_M
Text Generation • 12B • Updated • 128k • 15
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-Q6_K
Text Generation • 12B • Updated • 647 • 8
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-Q8_0
Text Generation • 12B • Updated • 242k • 7
JetBrains/Mellum2-12B-A2.5B-Instruct-GGUF-BF16
Text Generation • 12B • Updated • 83 • 2
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-MXFP4_MOE
Text Generation • 12B • Updated • 534 • 13
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-Q4_K_M
Text Generation • 12B • Updated • 2.62k • 44
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-Q6_K
Text Generation • 12B • Updated • 747 • 12
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-Q8_0
Text Generation • 12B • Updated • 585 • 22
JetBrains/Mellum2-12B-A2.5B-Thinking-GGUF-BF16
Text Generation • 12B • Updated • 60 • 6
JetBrains/Mellum-4b-dpo-python-gguf
4B • Updated • 39 • 5
JetBrains/Mellum-4b-dpo-python
Text Generation • 187k • Updated • 109 • 10
JetBrains/Mellum-4b-dpo-all-gguf
4B • Updated • 452 • 11
JetBrains/Mellum-4b-dpo-all
Text Generation • 187k • Updated • 271 • 12
JetBrains/Mellum-4b-sft-all
Text Generation • 4B • Updated • 613 • 16
JetBrains/Mellum-4b-sft-all-gguf
4B • Updated • 531 • 7
JetBrains/Mellum-4b-sft-kotlin-gguf
4B • Updated • 53 • 6
JetBrains/Mellum-4b-sft-kotlin
Text Generation • 4B • Updated • 98 • 22
JetBrains/Mellum-4b-sft-python
Text Generation • 4B • Updated • 129 • 56
JetBrains/Mellum-4b-sft-python-gguf
4B • Updated • 128 • 45