Anna lilith

Posted on Jul 2

Complete Guide to Running AI Models Locally for Free

#ai #ollama #python #tutorial

Run powerful AI models on your own hardware for free. No API keys needed.

Install Ollama

curl -fsSL https://ollama.ai/install.sh | sh
ollama pull qwen2.5:0.5b
ollama pull gemma:2b

Use via API

import requests

def ask_ollama(prompt, model="qwen2.5:0.5b"):
    resp = requests.post("http://localhost:11434/api/generate", json={
        "model": model,
        "prompt": prompt,
        "stream": False,
    })
    return resp.json()["response"]

Available Free Models

Model	Size	Best For
qwen2.5:0.5b	400MB	Fast responses, simple tasks
gemma:2b	1.5GB	General purpose
tinyllama	600MB	Lightweight tasks
phi3:mini	2GB	Reasoning tasks

Cost Comparison

OpenAI API: $0.002/1K tokens
Ollama local: $0 (just electricity)
For 1M tokens/month: Save $2

Production Tips

Use qwen2.5:0.5b for speed
Use gemma:2b for quality
Set OLLAMA_KEEP_ALIVE=24h to keep models loaded
Limit to 1 thread for OS stability

All these models used in the https://create-openings-unsigned-garden.trycloudflare.com storefront.

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