AI Archives - Page 13 of 14 - ITFROMZERO

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AI Model Comparison 2026: GPT-5.2, Claude Opus 4.6 / Sonnet 4.6, and Gemini 3.1 Pro — Which One Should You Choose?

By IT From Zero March 3, 2026

A hands-on developer comparison of GPT-5.2, Claude Opus 4.6/Sonnet 4.6, and Gemini 3.1 Pro: each model's strengths, API call code examples, and how to route tasks to optimize costs.

A Practical Guide to Using OpenAI API with Python: From Setup to Production

By IT From Zero March 3, 2026

A practical guide to using the OpenAI API with Python in a DevOps environment: proper setup, building a wrapper function with retry logic, streaming responses, parsing structured JSON output, and tracking token costs. Focused on common pitfalls and how to avoid them from the start.

How to Install ComfyUI for Local AI Image Generation

By IT From Zero March 2, 2026

A practical guide to installing ComfyUI locally for AI image generation with Stable Diffusion — covering GPU setup, model downloads, configuration, and real-world monitoring. Drawn from 8 months of hands-on use.

What is Prompt Injection and How to Protect Your AI Application from Attacks

By IT From Zero March 2, 2026

Prompt injection is an attack that embeds malicious instructions into user input to override an AI model's behavior. This post shares hands-on experience and 5 layers of defense: input sanitization, role separation, output validation, least privilege, and monitoring.

Fine-tuning AI Models with Your Own Data: A Practical Guide from A to Z

By IT From Zero March 2, 2026

A hands-on guide to fine-tuning AI models with your own data using LoRA and QLoRA. From dataset preparation and LoRA adapter configuration to training with SFTTrainer, merging, and deploying a custom model for real-world use.

Most Useful MCP Servers for Developers: A Complete Guide with Installation Instructions

By IT From Zero March 2, 2026

MCP (Model Context Protocol) lets AI connect directly to your file system, database, and development tools instead of being completely isolated. This post covers the 7 most useful MCP servers with detailed installation guides to integrate them into Claude Desktop right away.

AI API Cost Comparison: OpenAI vs Claude vs Gemini — 6 Months of Production Experience

By IT From Zero March 1, 2026

After 6 months running OpenAI, Claude, and Gemini in production, I've compiled a real-world cost comparison, the strengths and weaknesses of each platform, and a framework for selecting the right AI API for each task type. Switching to model routing cut my costs from $340 to $90/month at the same throughput.

Running LLMs Locally with Ollama: Comparing Approaches and a Practical Deployment Guide

By IT From Zero February 28, 2026

A guide to running LLMs locally with Ollama: comparing Ollama, llama.cpp, and LM Studio to pick the right approach, installing on Linux/macOS, running Mistral and Llama models, integrating the OpenAI-compatible REST API, and tips for setting up a shared server for your team.

Machine Learning for Beginners: From Theory to Practice with scikit-learn

By IT From Zero February 28, 2026

A practical machine learning guide for beginners: set up a Python environment, train a classification model with scikit-learn, serialize it, and monitor data drift in production. Based on real-world experience integrating ML into a DevOps pipeline — including the painful lesson of neglecting a model for 3 months and watching it drift.

Building a RAG Application with LangChain and Python: From Failure to Production

By IT From Zero February 28, 2026

Six months of hands-on experience building a RAG (Retrieval-Augmented Generation) system with LangChain and Python for an internal document lookup chatbot. From hallucination issues and context window limitations to a solution that actually works in production, with complete code examples.