# What is Ollama? Definition & Technical Mechanics

> **Source:** [SPIDITS AI AI Glossary](https://spidits.com/ai-glossary)  
> **Category:** Hardware & Infrastructure  
> **Canonical Citation:** [https://spidits.com/ai-glossary/ollama](https://spidits.com/ai-glossary/ollama)

## Definition
Ollama is a lightweight, open-source tool that allows developers to run, manage, and bundle Large Language Models locally on consumer devices. It provides a simple command-line interface and a local API server for seamless model integration.

## Architectural Mechanics & Deep Dive
Ollama is a developer tool and runtime that packaging Large Language Models into local containers on consumer hardware. Ollama exposes a standard local HTTP server and API, managing model downloads, weight offloading, and hardware-accelerated execution natively on macOS, Linux, and Windows. By packaging complex deep learning runtimes into simple CLI commands, Ollama has democratized local AI app development.

## Industry Applications & Real-World Use Cases
Offline AI assistant tools, local development environments, and private document parsing

## Frequently Asked Questions

### What model format does Ollama use?
Ollama uses the GGUF model format, allowing efficient CPU/GPU quantization offloading.

### Can Ollama run on Apple Silicon?
Yes, it is highly optimized for Apple Silicon GPUs, offering very fast local execution.

## Related Terminology
- [gguf](https://spidits.com/ai-glossary/gguf)
- [gpu](https://spidits.com/ai-glossary/gpu)
- [models](https://spidits.com/ai-glossary/models)

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*From the SPIDITS AI Knowledge Base (300+ terms indexed). Explore full technical definitions: [https://spidits.com/ai-glossary](https://spidits.com/ai-glossary)*