asgeirtj/system_prompts_leaks

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.

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.

github.com/asgeirtj/system_prompts_leaks makeapullrequest.com

🆕 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

Anthropic — Claude

Integrations, official prompts & older versions

OpenAI — ChatGPT

Older models & variants

Google — Gemini

Older models & variants

xAI — Grok

Older versions

Perplexity

Microsoft — Copilot

Cursor

Meta

Mistral

Notion

Qwen

Misc

More products

Contact

x.com/asgeirtj

Growth

star-history.comtrendshift.io/repositories/14577 star-history.com/asgeirtj/system_prompts_leaks