🤖 Delta - Tiny Helpful Assistant (GPT2-style)

Delta is a tiny transformer-based language model inspired by GPT-2, designed to be lightweight, fast, and helpful for simple natural language tasks.

This project demonstrates how to train a minimal GPT-2-like model using Hugging Face Transformers on custom text, then serve it locally via a FastAPI API or deploy it to Hugging Face Hub.

---

🧠 Model Details

• Architecture: GPT2 (custom config)
• Parameters: ~4.7M
• Layers: 2
• Embedding Size: 128
• Heads: 2
• Max Sequence Length: 128
• Trained on: ~300 characters (demo text)
• Format: PyTorch, ready for GGUF/Ollama conversion

---

📁 Files Included

• config.json: GPT2 model configuration
• pytorch_model.bin: Fine-tuned model weights
• tokenizer_config.json, vocab.json, merges.txt: Tokenizer files
• generation_config.json: Optional generation tuning
• README.md: You’re reading it!
• main.py: (Optional) FastAPI local serving code

---

🚀 Quick Start (Hugging Face Transformers)

Install dependencies:

pip install transformers torch

Load and use the model:

from transformers import GPT2Tokenizer, GPT2LMHeadModel

tokenizer = GPT2Tokenizer.from_pretrained("Vijay1303/delta")
model = GPT2LMHeadModel.from_pretrained("Vijay1303/delta")
model.eval()

input_ids = tokenizer("Hello Delta, can you help me?", return_tensors="pt").input_ids
outputs = model.generate(input_ids, max_length=50, do_sample=True)
print(tokenizer.decode(outputs[0], skip_special_tokens=True))

---

🌐 Run Locally via FastAPI

1. Install dependencies:

pip install fastapi uvicorn transformers torch

2. Run server:

uvicorn main:app --reload --port 8000

3. Query API:

curl -X POST http://localhost:8000/generate \
  -H "Content-Type: application/json" \
  -d '{"prompt": "Hello Delta,", "max_length": 50}'

---

📦 Deployment

You can:

• Convert to GGUF for Ollama or llama.cpp
• Push to Hugging Face Hub
• Serve via an API (FastAPI, Flask, etc.)

---

⚠️ Limitations

• Trained on a small dataset (~300 characters)
• Not suitable for production tasks
• For experimentation and educational use

---

📚 References

• Hugging Face Transformers
• Training GPT2 from Scratch
• Ollama
• GGUF Format

---

👨‍💻 Author

Vijay1303
Hugging Face Profile
Feel free to ⭐ the repo if you find this useful!