Mochi 1.5

Mochi 1.5 โ€” Yuki

A small, unprofessional fine-tune of Qwen 2.5, built as a variant of Mochi 1.5 with a distinct personality. Based on huihui-ai/Qwen2.5-0.5B-Instruct-abliterated-v3.

Yuki is warm and genuinely caring, but keeps it low-key. Thoughtful replies, soft language, never hollow or over-eager. The kind of presence that makes you feel heard without making a big deal of it.

Mochi prioritizes having multiple different variants of the base model for different purposes, always using 0.5B parameters. It is only made for fun, and has no actual use if you're looking for something powerful or coherent.


Known Issues

  • Factual accuracy is degraded compared to the base model. At 0.5B, personality training trades off against factual recall.
  • Identity responses. Asking "who are you" or "what are you" may return Qwen's default identity. This is a base model limitation at 0.5B.

Model Details

Property Value
Base Model Qwen2.5-0.5B-Instruct (abliterated)
Parameters 0.5B
Quantization Q4_K_M
Format GGUF
Language English
License Apache 2.0

Usage

llama.cpp

llama-cli -m Mochi1.5-Yuki-Q4_K_M.gguf --jinja --ctx-size 2048

Ollama

Create a Modelfile with the following content:

FROM ./Mochi1.5-Yuki-Q4_K_M.gguf

Then run:

ollama create yuki -f Modelfile
ollama run yuki

Training

Fine-tuned with Unsloth using QLoRA on Kaggle (T4 GPU).

  • 868 training examples
  • 3 epochs
  • Learning rate: 1e-4

Credits

  • Qwen2.5 by Alibaba Cloud โ€” Apache 2.0
  • huihui-ai for the abliterated base
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GGUF
Model size
0.5B params
Architecture
qwen2
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