16x Prompt is a desktop application designed to help developers compose the perfect prompt with source code and context for ChatGPT and other LLMs. It allows users to add context, source code, and formatting instructions to prompts easily, manage code context, customize prompts, and ship features faster with multiple LLM API integrations. It supports API integrations with providers like OpenAI, Anthropic Claude, Google Gemini, DeepSeek, OpenRouter, Ollama, and Azure OpenAI.
A desktop app for developers to create optimized prompts for LLMs with code context.
- Refactoring code
- Creating a new page
- Writing documentation
- Applying code changes safely
- Comparing LLM responses
- Managing multiple repositories and projects
- Users enter instructions
- select source code files
- and the app generates a final prompt. This prompt can then be copied and pasted into ChatGPT
- Claude
- or DeepSeek. The app automatically adds optimal formatting instructions and optimizes the source code and prompt for best results.

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