LLM Layer

Running locally · Ollama · Gemma · Llama · Mistral

The $0 AI Architecture Stack · 2026

What is the LLM Layer?

The LLM Layer is where reasoning happens. Running open-weight models locally with Ollama means $0 in API costs and full data privacy. Pick a model by size and need: Gemma 3 4B for fast, lightweight tasks, Llama 3.3 70B for high-quality reasoning, and Mistral Small 4 for a balanced, efficient option.

Tools in this Layer

🦙 Ollama

Run and serve open-weight LLMs locally with a single command and an OpenAI-compatible API.

💎 Gemma 3 4B

Google's small, fast model — great for lightweight tasks on modest hardware.

🦙 Llama 3.3 70B

Meta's flagship open model for strong reasoning and instruction following.

🌬️ Mistral Small 4

Efficient European model balancing quality and speed.

Cost

$0 / free tier

100% free and private — models run on your own machine.

Explore the Full $0 AI Stack

1 Frontend Layer 2 Agent Orchestrator 3 RAG Pipeline 4 LLM Layer 5 Tool Use via MCP 6 Code Agent 7 Data Layer 8 Deployment Layer