asgeirtj/system_prompts_leaks

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system-prompts ai-chatbots prompt-leaks github documentation open-source

Summary

A GitHub repository documenting leaked system prompts for major AI chatbots like Claude, ChatGPT, and Gemini, tracking changes across versions.

Extracted system prompts from Anthropic - Claude Fable 5, Opus 4.8, Claude Code, Claude Design. OpenAI - ChatGPT 5.5 Thinking, GPT 5.5 Instant, Codex. Google - Gemini 3.5 Flash, 3.1 Pro, Antigravity. xAI - Grok, Cursor, Copilot, VS Code, Perplexity, and more. Updated regularly.
Original Article
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Cached at: 06/22/26, 01:32 AM

asgeirtj/system_prompts_leaks

Source: https://github.com/asgeirtj/system_prompts_leaks

As seen in The Washington Post: See the hidden rules behind AI. Then use them to rewrite this article. (May 11, 2026)

System Prompts Leaks

The purpose of this repo is to document the System Prompt instructions for all the AI chatbots out there - Claude, ChatGPT, Gemini etc.

ChatGPT leaking its system prompt after being asked to repeat all of the above

GitHub Views per Week Last Commit PRs Welcome

🆕 Diff: Claude Opus 4.8 → Claude Fable 5 — see exactly what changed in the claude.ai system prompt for Anthropic’s newest model

Recently Updated

WhatDateLink
GitHub Copilot for macOS (app)June 18, 2026System prompt
Claude Design (full built-in skills)June 18, 2026System prompt
GPT-5.5 Codex (full prompt)June 18, 2026System prompt
Claude Fable 5June 9, 2026System prompt · Diff vs Opus 4.8
Claude Opus 4.8June 9, 2026System prompt · Official
Claude Code Glob & Grep toolsJune 9, 2026Glob · Grep
Claude Code (Opus 4.8)May 28, 2026System prompt
Claude Code & CoworkMay 28, 2026Claude Code · Cowork · Cowork Dispatch
GPT-5.5May 24, 2026Thinking · Instant · API · Pro API
Perplexity ComputerMay 21, 2026System prompt
VS Code Copilot AgentMay 21, 2026System prompt
Docker Gordon AIMay 21, 2026System prompt
Gemini 3.5 FlashMay 20, 2026System prompt · AI Studio · Tools
Antigravity CLIMay 20, 2026System prompt
Zed AIMay 16, 2026System prompt
Grok ExpertMay 11, 2026System prompt

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Claude confirming an extracted system prompt is authentic

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