16x Prompt

16x Prompt is a desktop application designed specifically for developers who work with AI coding assistants. It solves a fundamental problem: how to effectively incorporate relevant source code context when crafting prompts for tools like ChatGPT, Claude, or Gemini. Instead of manually copying and pasting code snippets, you can drag and drop files directly into the app, which then structures everything into an optimized prompt with proper formatting instructions.

The tool stands out with its thoughtful features for professional workflows. The new Code Edit feature lets you safely apply AI-generated changes with visual diffs and automatic backups. You can compare outputs from different AI models side-by-side to determine which performs best for your specific use case. The app supports bring-your-own-API-key integration with multiple providers including OpenAI, Anthropic, Google Gemini, and any service with OpenAI API compatibility.

16x Prompt is particularly valuable for developers working on established codebases across multiple projects. Its workspace feature helps organize different repositories, making it ideal for agency developers handling client work or engineers maintaining several projects. The local operation ensures data privacy, and the token tracking prevents exceeding model limits. It's essentially a professional-grade prompt engineering workstation for coders who regularly use AI assistants in their daily work.