What is 16x Prompt?

16x Prompt is a desktop application that helps developers compose prompts for AI coding assistants like ChatGPT, Claude, and Gemini. It allows users to select relevant source code files, add task instructions, and generate optimized prompts with formatting instructions and token limit tracking. The app runs locally, ensuring data privacy, and supports API integrations with various providers.

How to use 16x Prompt?

Download and install 16x Prompt. Enter your task instruction and select the relevant source code files. The app automatically generates an optimized prompt with formatting instructions. You can copy the final prompt and paste it into ChatGPT, Claude, or other LLMs, or send it via API using your own API key. For API integration, configure your API key in the settings and select the desired model.

Core features of 16x Prompt

Structured prompt creation for coding tasks
Source code context management with workspaces
API integrations with OpenAI, Anthropic, Gemini, DeepSeek, OpenRouter, Ollama, and more
Token limit tracking to stay within LLM limits
Code editing with visual diffs and automatic backups
Prompt management and custom instructions
Compare LLM responses side-by-side