LLM Brain

The world of Artificial Intelligence is evolving at breakneck speed, and building applications powered by Large Language Models (LLMs) requires much more than just the model itself. It demands a sophisticated toolkit of databases, frameworks, and extraction layers.

This guide breaks down the essential categories that make up the modern LLM Stack, using the key players shown in the attached diagram.

🧠 Layer 1: The Brains – Large Language Models (LLMs)

🛠️ Layer 2: The Glue – Frameworks

💾 Layer 3: The Memory – Vector Databases

📄 Layer 4: The Input – Data Extraction

🌐 Layer 5: The Pipes – Open LLM Access & Text Embeddings

⚖️ Layer 6: The Standard – Evaluation

LLM ecosystem is a dense, powerful matrix of specialized tools. By understanding the function of each layer—from the Brain (LLM) to the Memory (Vector Database) to the Standard (Evaluation)—developers can select the right components to build truly intelligent, robust, and scalable AI applications.