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Mellum2 12B A2.5B Base by JetBrains

By JetBrains · 16753 downloads
HF Repo ↗ Copy URL

Mellum2 12B A2.5B Base is an open-source language model by JetBrains. Features: 12b LLM, VRAM: 24.3GB, Context: 128K, License: apache-2.0, LLM Explorer Score: 0.3.

  Arxiv:2605.31268   En   Endpoints compatible   Eval-results   Mellum   Model-index   Region:us   Safetensors   Sharded   Tensorflow
Model Card on HF 🤗: https://huggingface.co/JetBrains/Mellum2-12B-A2.5B-Base 

Mellum2 12B A2.5B Base Parameters and Internals

LLM NameMellum2 12B A2.5B Base
Repository 🤗https://huggingface.co/JetBrains/Mellum2-12B-A2.5B-Base 
Model Size12b
Required VRAM24.3 GB
Updated2026-08-09
MaintainerJetBrains
Model Typemellum
Model Files  5.0 GB: 1-of-5   5.0 GB: 2-of-5   5.0 GB: 3-of-5   5.0 GB: 4-of-5   4.3 GB: 5-of-5
Supported Languagesen
Model ArchitectureMellumForCausalLM
Licenseapache-2.0
Context Length131072
Model Max Length131072
Transformers Version5.8.1
Tokenizer ClassPreTrainedTokenizerFast
Padding Token<|endoftext|>
Vocabulary Size98304

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Note: green Score (e.g. "73.2") means that the model is better than JetBrains/Mellum2-12B-A2.5B-Base.