nanogpt

Train transformer models from scratch with a minimalist GPT implementation.

3|Updated Feb 21, 2026
One-click install
npx skills add https://github.com/ihatesea69/HieuNghi-AI-Skills --skill nanogpt-ihatesea69
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: nanogpt
Source: https://github.com/ihatesea69/HieuNghi-AI-Skills/tree/main/airesearch_skills/01-model-architecture/nanogpt
Command: npx skills add https://github.com/ihatesea69/HieuNghi-AI-Skills --skill nanogpt-ihatesea69

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires torch, transformers, datasets, tiktoken, wandb, tqdm, numpy, requests, scipy, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill provides a minimalist, educational implementation of the GPT architecture, allowing users to understand and experiment with transformer models from the ground up.

Core Features & Use Cases

  • Educational Transformer: Learn the inner workings of GPT with clean, concise code (~300 lines for the model, ~300 for training).
  • Reproduce GPT-2: Train and sample from a GPT-2 (124M) model on OpenWebText.
  • Custom Datasets: Easily train on your own text data.
  • Use Case: A researcher wants to understand the core components of a transformer model and how they interact during training. They can use this Skill to train a small model on a custom dataset and visualize the attention mechanisms.

Quick Start

Train a character-level model on the Shakespeare dataset by running python train.py config/train_shakespeare_char.py.

Frequently Asked Questions about nanogpt

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I build and understand the GPT transformer architecture from scratch?

This Skill provides a minimalist educational implementation to build GPT from scratch, featuring roughly 300 lines of model code and 300 lines of training code. It enables you to understand the inner workings of transformer models and experiment with their core components directly.

Can I use PyTorch to train a GPT model on my own custom text datasets?

Yes, you can train a GPT model on custom datasets using PyTorch. The Skill supports easy training on your own text data, allowing you to fine-tune transformer models and sample from them after preparing your data with the included scripts.

What is the best way to reproduce GPT-2 (124M) training on OpenWebText?

The best way to reproduce GPT-2 (124M) is using this Skill's provided training configurations. It enables you to train and sample from a GPT-2 124M model on the OpenWebText dataset while providing detailed explanations of the data preparation and training loops.

How do I train a character-level transformer model on text like the Shakespeare dataset?

You can train a character-level transformer model on the Shakespeare dataset by running a simple configuration script. This provides a quick start for understanding how deep learning models process sequential text data and generate outputs.

Do I need to install tiktoken and datasets to run GPT training scripts?

Yes, you need tiktoken and datasets installed along with PyTorch, transformers, and wandb. These dependencies are required to handle tokenization, load text data, and manage the training loops necessary for training transformer models from scratch.

Why use a minimalist educational implementation instead of the full Hugging Face transformers library?

A minimalist educational implementation is used to clearly expose the core model architecture without abstraction. It helps you understand exactly how the transformer components interact during training, whereas the full transformers library is optimized for production deployment rather than learning.