anthracite-org/magnum-v2-12b

This is the fourth in a series of models designed to replicate the prose quality of the Claude 3 models, specifically Sonnet and Opus. This model is fine-tuned on top of Mistral-Nemo-Base-2407.

Prompting

Model has been Instruct tuned with the ChatML formatting. A typical input would look like this:

"""<|im_start|>system
system prompt<|im_end|>
<|im_start|>user
Hi there!<|im_end|>
<|im_start|>assistant
Nice to meet you!<|im_end|>
<|im_start|>user
Can I ask a question?<|im_end|>
<|im_start|>assistant
"""

Credits

• Stheno dataset (filtered)
• kalomaze/Opus_Instruct_25k
• Nopm/Opus_WritingStruct
• Gryphe/Sonnet3.5-SlimOrcaDedupCleaned (A ~16k rows subset)
• kalomaze/Opus_Instruct_3k

This model has been a team effort, and the credits goes to all members of Anthracite.

Training

The training was done for 2 epochs. We used 8x NVIDIA H100 Tensor Core GPUs for the full-parameter fine-tuning of the model.

Safety

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Open LLM Leaderboard Evaluation Results

Detailed results can be found here

Metric	Value
Avg.	18.68
IFEval (0-Shot)	37.62
BBH (3-Shot)	28.79
MATH Lvl 5 (4-Shot)	4.76
GPQA (0-shot)	5.48
MuSR (0-shot)	11.37
MMLU-PRO (5-shot)	24.08