Model Card for NPC Brain

This is a fine-tune of Open BMB's Mini CPM5 1B parameter model.

I have specifically trained it to be the "Brain" of my app for the Build Small Hackathon in June 2026

• Developed by: mecoffey
• Model type: Causal Language Model
• Language: English
• License: apache-2.0
• Finetuned from model: https://huggingface.co/openbmb/MiniCPM5-1B
• Total Parameters after fine-tune 1,080,632,832

Recommendations

This model was trained with the following workflow in mind:

• User prompt = physical description of a fantasy character.
• User prompt + generated description = a timeline backstory for the character to get to know them.

The user prompt is designed to be short and simple. "something random", "a farmer" "a Half-Orc barkeep with a noticeable scar"

Training Details

Training Data

https://huggingface.co/datasets/mecoffey/npc_dataset

Compute Infrastructure

Trained with Modal GPUs

Citation

@article{minicpm4, title={Minicpm4: Ultra-efficient llms on end devices}, author={MiniCPM, Team}, journal={arXiv preprint arXiv:2506.07900}, year={2025} }