Prompt Engineering: Free vs Premium
Prompt engineering is a critical skill for getting the best output from LLMs. DevUtility offers 13 specialized tools — from prompt cleaners to system prompt builders to code reviewers — all running locally in your browser.
The DevUtility Approach
DevUtility's AI tools help you *prepare* prompts before pasting them into ChatGPT, Claude, or any LLM. This means no API keys, no accounts, and no server calls. Tools include: AI Prompt Cleaner, System Prompt Builder, Code Explainer Prep, Commit Message Prep, Code Reviewer, Diff Explainer, JSON-to-Prompt, README Generator, Context Window Calculator, API Cost Calculator, Token Counter, and more.
The PromptPerfect Approach
PromptPerfect uses AI to optimize your prompts automatically. It's a powerful tool, but it costs money, requires accounts, and sends your prompts through their servers.
Which Should You Use?
If you want free, private, zero-setup prompt tools, DevUtility is unbeatable. If you need AI-powered optimization and have budget, PromptPerfect is worth considering. Most developers will find DevUtility's toolset more than sufficient.