I trained my own LLM and published it on HuggingFace

This is the post where things got real. Training an actual language model, watching the loss go down, pushing it to HuggingFace with my name on it. The plan I couldn't afford to train from scratch — that takes thousands of GPU hours and costs thousands of dollars. Instead I used fine-tuning: take an existing pre-trained model and train it further on my medical data. The model I chose: facebook/opt-1.3b — 1.3 billion parameters, open source, no access restrictions. The technique: LoRA (Low-Rank A