• Prompt Injection Explained: Attacks, Examples, and Defenses

    Prompt Injection Explained: Attacks, Examples, and Defenses

    If you’re building with large language models, you’ve probably heard the term “prompt injection.” Maybe you’ve even seen some wild examples on social media—LLMs leaking secrets, ignoring instructions, or doing things you never intended. But what exactly is prompt injection, and how can you protect your AI-powered apps from it? Let’s break it down, step by step, in plain…

  • Prompt Engineering Guide: Practical Tips, Templates, and Examples

    Prompt Engineering Guide: Practical Tips, Templates, and Examples

    So, you’ve read the high-level guides What is an LLM? A Simple Guide to Large Language Models and How Do Large Language Models Actually Work? ,  You know what a Large Language Model is and you have a basic grasp of how they work. You’re ready to build something. But when you start…

  • Stop Guessing: Evaluate Your AI Prompts Across Models with PromptEval

    Stop Guessing: Evaluate Your AI Prompts Across Models with PromptEval

    TL;DR: You spend hours crafting prompts, but how do you know they actually work? PromptEval is an open-source Python CLI that tests your prompts across multiple LLM providers, scores quality, tracks costs, catches security vulnerabilities, and generates a single shareable HTML report — all from one command. The Problem: Prompt Engineering Without Measurement Every team building with LLMs hits…