What is Ollama
Ollama is a local runtime that allows you to run large language models (LLMs) directly on your machine. Instead of sending prompts to a cloud provider, Ollama downloads models and executes them locally.
This gives you full control over your data, eliminates API costs, and allows offline usage. It is widely used by developers building AI-powered tools without relying on external services.
Ollama exposes both a command-line interface and a local HTTP API, making it easy to integrate into scripts, desktop apps, and web applications.
Ollama manages model downloads, storage, and execution. When you run a command like:
ollama run llama3it will:
- Download the model if not already installed
- Load it into memory
- Start an interactive session
It also runs a local API server (default: http://localhost:11434) that applications can call.
- Run LLMs locally (no cloud required)
- Simple CLI interface
- Local REST API
- Supports multiple models
- Works offline
- No API costs
Ollama supports a variety of models including:
- llama3
- mistral
- codellama
- deepseek-coder
- phi
curl http://localhost:11434/api/generate -d '{
"model": "llama3",
"prompt": "Explain COBOL"
}'This allows integration into any application including PHP, C++, or JavaScript frontends.
- CPU works (slower)
- GPU recommended for performance
- 7B models run on most systems
- 13B+ require more RAM/VRAM
Ollama is a powerful solution for running AI locally. It is ideal for developers who want full control, privacy, and zero dependency on cloud services.
It integrates easily with modern stacks and is especially useful for building custom AI applications, automation tools, and developer workflows.