Open Source Model
also open weights
An AI model whose weights are publicly released so anyone can download, run, and self-host it.
Analogy
Like a recipe published in full so anyone can cook it at home.
Why it matters
Open models (Llama, Qwen, DeepSeek) let you run AI privately or cheaply at scale, an alternative to paid APIs.
In practice
Running Llama locally via Ollama instead of calling a paid cloud API.