Reverse-Engineered System Prompts
The actual system prompts behind well-known AI products — official releases and reported leaks, each with the source link, a status badge, and our analysis of what's worth stealing for your own prompts.
Entries marked reported come from public leaks or prompt-injection extractions and are presented as reported, authenticity unverified. Entries marked official were published by the vendor itself.
| Product | Company | Status | Observed |
|---|---|---|---|
| Gemini CLI System Prompt The default system prompt of Google's Gemini CLI, taken verbatim from the official open-source repository's... |
official | 2026-09-08 | |
| v0 System Prompt The system prompt behind Vercel v0 UI-generation assistant, as archived from public leaks. As reported, aut... |
Vercel | reported | 2026-05-10 |
| Claude Code System Prompt The system prompt of Anthropic's Claude Code CLI (Sonnet 4 era), archived from a public leak. As reported, ... |
Anthropic | reported | 2025-12-02 |
| Claude Sonnet 4.5 System Prompt The official system prompt Anthropic ships with Claude Sonnet 4.5 on claude.ai — published by Anthropic its... |
Anthropic | official | 2025-09-29 |
| Lovable Agent System Prompt The agent system prompt of Lovable, the chat-driven web app builder, archived from public leaks. As reporte... |
Lovable | reported | 2025-09-16 |
| OpenAI Model Spec OpenAI public Model Spec (CC0) — the instruction hierarchy and behavioral defaults its models are trained t... |
OpenAI | official | 2025-09-12 |
| ChatGPT (GPT-5) System Prompt The ChatGPT GPT-5 system prompt as archived from public leaks — personality "v2", tool routing, and formatt... |
OpenAI | reported | 2025-08-07 |
| Replit Agent System Prompt Replit's coding assistant prompt: typed XML tags for proposing file edits, shell commands, and deployments.... |
Replit | reported | 2025-07-26 |
| Windsurf Cascade System Prompt The Cascade agent system prompt from the Windsurf AI IDE (Wave 11), archived from public leaks. As reported... |
Codeium | reported | 2025-07-21 |
| Cursor Agent System Prompt The agent-mode system prompt used by the Cursor AI code editor, as archived from public leaks. As reported,... |
Anysphere | reported | 2025-07-15 |
| Devin System Prompt The system prompt for Devin, Cognition autonomous software engineer, as archived from public leaks. As repo... |
Cognition | reported | 2025-05-15 |
| Manus Agent System Prompt The agent-loop system prompt module of Manus, the general AI agent by Butterfly Effect, from the March 2025... |
Butterfly Effect | reported | 2025-03-26 |
| Perplexity System Prompt The answer-writing system prompt behind Perplexity's search assistant, published via a 2025 prompt-hacking ... |
Perplexity AI | reported | 2025-01-12 |
| Bolt.new System Prompt The system prompt behind Bolt.new, StackBlitz's in-browser AI app builder, archived from a public leak. As ... |
StackBlitz | reported | 2024-10-03 |
| GitHub Copilot Chat System Prompt GitHub Copilot Chat rules as extracted by Marvin von Hagen in May 2023 — identity, refusals, and the famous... |
GitHub / Microsoft | reported | 2023-05-13 |
| Bing Chat "Sydney" System Prompt The rules behind Microsoft original Bing Chat (Sydney), extracted by Kevin Liu in Feb 2023 via prompt injec... |
Microsoft | reported | 2023-02-09 |
| Notion AI System Prompts Notion AI writing prompts as reverse-engineered by swyx in Dec 2022 — an early published breakdown of a com... |
Notion | reported | 2022-12-28 |
Why read other products' prompts?
Production system prompts are the most iterated-on prompts in the world — every line in them survived millions of conversations. Studying how Claude, ChatGPT, Cursor or Perplexity structure identity, rules, tools and formatting teaches you more than any prompt-engineering tutorial. When you're ready to apply the patterns, browse our curated prompt library.