Ollama Has a Free Local LLM Runner — Run AI Models on Your Laptop

Ollama is a local LLM runner — download and run open-source AI models on your machine with one command.

What You Get for Free

• One command — ollama run llama3 downloads and runs
• Many models — Llama 3, Mistral, Gemma, Phi, CodeLlama, and more
• OpenAI-compatible API — drop-in replacement for GPT API calls
• Custom models — create Modelfiles with custom system prompts
• GPU support — NVIDIA, AMD, Apple Silicon acceleration
• Embedding models — run embedding models locally
• Multi-model — run multiple models simultaneously
• Offline — works without internet after download

Quick Start

# Install
curl -fsSL https://ollama.ai/install.sh | sh

# Run a model
ollama run llama3
# Start chatting immediately

# Use as API (OpenAI-compatible)
curl http://localhost:11434/v1/chat/completions \
  -d '{"model":"llama3","messages":[{"role":"user","content":"Hello"}]}'

# Use with OpenAI Python SDK
from openai import OpenAI
client = OpenAI(base_url="http://localhost:11434/v1", api_key="unused")
response = client.chat.completions.create(
    model="llama3",
    messages=[{"role": "user", "content": "Write a function to sort a list"}]
)

Why Developers Switch from API-Only LLMs

Sending data to OpenAI/Anthropic means your data leaves your machine:

• Privacy — all data stays local, never sent to cloud
• $0 cost — no per-token charges, unlimited usage
• Offline — works without internet
• OpenAI-compatible — swap base_url, keep your code

A developer spent $200/month on GPT-4 API calls for code review. After Ollama + CodeLlama: same quality for code review tasks, $0/month, data never leaves the laptop.

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