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Mythalion 13B by PygmalionAI

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Mythalion 13B is an open-source language model by PygmalionAI. Features: 13b LLM, VRAM: 26GB, Context: 4K, License: llama2, Instruction-Based, HF Score: 56.5, LLM Explorer Score: 0.14, Arc: 61.3, HellaSwag: 83.8, MMLU: 56.5, TruthfulQA: 46.6, WinoGrande: 77.4, GSM8K: 13.3.

Dataset:databricks/databricks-... Dataset:jondurbin/airoboros-gp... Dataset:norquinal/claude multi...   Dataset:open-orca/openorca   Dataset:pygmalionai/pippa   Deploy:azure   En   Instruct   Llama   Pytorch   Region:us   Safetensors   Sharded   Tensorflow
Model Card on HF 🤗: https://huggingface.co/PygmalionAI/mythalion-13b 

Mythalion 13B Benchmarks

ARC: 61.26 vs 96.7 (so35)-36.6%
HellaSwag: 83.81 vs 95.3 (gpt4)-12.1%
MMLU: 56.53 vs 88.3 (so35)-36%
TruthfulQA: 46.56 vs 59 (gpt4)-21.1%
WinoGrande: 77.43 vs 87.5 (gpt4)-11.5%
GSM8K: 13.27 vs 96.4 (so35)-86.2%
LLME Score: 0.13611
nn.n% — How the model compares to the reference models: Anthropic Sonnet 3.5 ("so35"), GPT-4o ("gpt4o") or GPT-4 ("gpt4").
Mythalion 13B (PygmalionAI/mythalion-13b)
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Mythalion 13B Parameters and Internals

Model Type 
text generation, instruct
Use Cases 
Areas:
fictional writing, entertainment purposes
Limitations:
not fine-tuned to be safe and harmless, trained on data with profanity and offensive content, may produce undesirable text, factually wrong or misleading outputs
Additional Notes 
The model outperforms MythoMax in RP/Chat according to testers.
Training Details 
Data Sources:
PygmalionAI/PIPPA, Open-Orca/OpenOrca, Norquinal/claude_multiround_chat_30k, jondurbin/airoboros-gpt4-1.4.1, databricks/databricks-dolly-15k
Input Output 
Input Format:
Alpaca or Pygmalion formatting
Performance Tips:
Follow recommended generation settings for SillyTavern
LLM NameMythalion 13B
Repository 🤗https://huggingface.co/PygmalionAI/mythalion-13b 
Model Size13b
Required VRAM26 GB
Updated2026-03-30
MaintainerPygmalionAI
Model Typellama
Instruction-BasedYes
Model Files  9.9 GB: 1-of-3   9.9 GB: 2-of-3   6.2 GB: 3-of-3   9.9 GB: 1-of-3   9.9 GB: 2-of-3   6.2 GB: 3-of-3
Supported Languagesen
Model ArchitectureLlamaForCausalLM
Licensellama2
Context Length4096
Model Max Length4096
Transformers Version4.33.0.dev0
Tokenizer ClassLlamaTokenizer
Beginning of Sentence Token<s>
End of Sentence Token</s>
Unk Token<unk>
Vocabulary Size32000
Torch Data Typefloat16

Quantized Models of the Mythalion 13B

Model
Likes
Downloads
VRAM
Mythalion 13B GGUF709115 GB
Mythalion 13B AWQ102027 GB
Mythalion 13B GPTQ52947 GB

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Llama 3 13B Instruct Ft8K / 26.1 GB52
Note: green Score (e.g. "73.2") means that the model is better than PygmalionAI/mythalion-13b.

Rank the Mythalion 13B Capabilities

🆘 Have you tried this model? Rate its performance. This feedback would greatly assist ML community in identifying the most suitable model for their needs. Your contribution really does make a difference! 🌟

Instruction Following and Task Automation  
Factuality and Completeness of Knowledge  
Censorship and Alignment  
Data Analysis and Insight Generation  
Text Generation  
Text Summarization and Feature Extraction  
Code Generation  
Multi-Language Support and Translation  

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