Prompt Engineering Guide
A comprehensive, free resource for learning prompt engineering, context engineering, RAG, and AI agents, with guides, papers, notebooks, and courses.
System Prompts Leaks — The System Prompt Archive
A verbatim, regularly updated archive of the real system prompts behind ChatGPT, Claude, Gemini, Grok and dozens of other AI products, for research and prompt engineering.
12-Factor Agents
Core engineering principles for building reliable, scalable, and maintainable LLM-powered software.
EgoAlpha Prompt In-Context Learning Guide
An open-source engineering guide to prompt-in-context learning, featuring latest papers, prompt examples, and a LangChain tutorial.
LearnPrompt: Free & Open-Source AI Practical Tutorials
A permanently free Chinese AI tutorial covering Claude Code, Codex, ChatGPT, Midjourney, and more, guiding you from basics to building your own AI workspace.
Decrypt Prompt
A curated map of prompt, LLM, RAG, and agent research.
AIWG
Reusable project context and specialist workflows for the AI coding tools you already use, so decisions persist across sessions.