The Llama Family
Llama (Large Language Model Meta AI) is Meta's series of open-weight language models, widely considered the most important open-source AI project in the world.
Model History
Llama 1 (Feb 2023): Released in 7B, 13B, 33B, and 65B parameter sizes. Initially restricted to researchers, but the weights leaked within a week, sparking a massive open-source AI movement.
Llama 2 (Jul 2023): Officially open-sourced for commercial use. Released in 7B, 13B, and 70B sizes with chat-tuned variants. Became the foundation for hundreds of community fine-tunes.
Llama 3 (2024): Dramatic quality improvements that closed the gap with proprietary models. The 70B version rivaled GPT-4 on many tasks.
Why Llama Matters
Local Deployment: Smaller Llama variants can run on consumer hardware, enabling private AI without sending data to the cloud.
Customization: Organizations can fine-tune Llama for specific industries (legal, medical, finance) with full control over the model.
Cost: Self-hosting Llama eliminates per-token API costs, making it economical for high-volume applications.
Ecosystem
Tools like Ollama, llama.cpp, and vLLM make it easy to deploy Llama models. The Hugging Face community hosts thousands of Llama-based fine-tunes for specialized tasks.