asgeirtj / system_prompts_leaks
Extracted system prompts from Anthropic - Claude Fable 5, Opus 4.8, Claude Code, Claude Design. OpenAI - ChatGPT GPT-5.6, Codex GPT-5.6, GPT-5.5. Google - Gemini 3.5 Flash, 3.1 Pro, Antigravity. xAI - Grok, Cursor, Copilot, VS Code, Perplexity, and more. Updated regularly.
description README.md
Thanks to
System Prompts Leaks
The full verbatim system prompts behind the most popular chatbots in the world. Carefully curated and complete. Feel free to open up a PR or get in contact if you got a different result.
The Washington Post built its interactive story on prompts from this repo: See the hidden rules behind AI. Then use them to rewrite this article. (May 11, 2026)
CEPS' AI World built an interactive breakdown of what is inside system prompts, topic by topic, from this repo's files: System prompts and what they tell us about the chat before the chat (July 10, 2026)
Simon Willison calls it "the most thorough leaked system prompt collection I know of": ChatGPT search now uses the site: operator at scale (August 20, 2026)
Most recent additions/changes
| What | Date | Link |
|---|---|---|
| Claude artifact types (Slides, Dashboard, Design, Docs) | October 9, 2026 | Slides · Dashboard · Design · Design System · Docs · all types |
| Claude Haiku 5.5 | October 7, 2026 | Claude Haiku 5.5 system prompt |
| Haiku 5.5 Claude Code | October 7, 2026 | Claude Code system prompt (Haiku 5.5) |
| ChatGPT Dots | October 5, 2026 | Dreamer system prompt · Voice · all prompts · skills |
| Muse Spark 1.3 Muse Code | October 4, 2026 | Muse Code system prompt (Muse Spark 1.3) · skills · prompts |
| Meta Muse agent (VM files) | October 3, 2026 | Muse agent system prompt · all VM files |
| Grok 4.7 | October 3, 2026 | Grok 4.7 system prompt (grok.com) |
| Fable 5.1 Claude Code on the web (cloud) | September 30, 2026 | Claude Code on the web system prompt (Fable 5.1) |
| GPT-6.1-Sol Codex | September 29, 2026 | GPT-6.1-Sol Codex system prompt · ChatGPT Work local |
| Claude Sonnet 5.5 | September 29, 2026 | Claude Sonnet 5.5 system prompt |
| Sonnet 5.5 Claude Code | September 29, 2026 | Claude Code system prompt (Sonnet 5.5) |
| GPT-6-Sol Codex | September 27, 2026 | GPT-6-Sol Codex system prompt |
Anthropic — Claude
Claude.ai system prompts (web, desktop & mobile)
| Model | Prompt |
|---|---|
| Claude Haiku 5.5 | Claude Haiku 5.5 system prompt |
| Claude Sonnet 5.5 | Claude Sonnet 5.5 system prompt |
| Claude Opus 5.5 | Claude Opus 5.5 system prompt |
| Claude Fable 5.1 | Claude Fable 5.1 system prompt |
| Claude Opus 5 | Claude Opus 5 system prompt |
| Claude Fable 5 | Claude Fable 5 system prompt |
| Claude Opus 4.8 | Claude Opus 4.8 system prompt |
| Claude Sonnet 5 | Claude Sonnet 5 system prompt |
| Claude Opus 4.7 | Claude Opus 4.7 system prompt |
| Claude Opus 4.6 | Claude Opus 4.6 system prompt · No tools |
| Claude Sonnet 4.6 | Claude Sonnet 4.6 system prompt · No tools |
| Injected reminders | Claude.ai injected reminders |
Claude Code system prompts
| Component | Prompt |
|---|---|
| Opus 5.5 Claude Code | Claude Code system prompt (Opus 5.5) |
| Sonnet 5.5 Claude Code | Claude Code system prompt (Sonnet 5.5) |
| Haiku 5.5 Claude Code | Claude Code system prompt (Haiku 5.5) |
| Fable 5.1 Claude Code | Claude Code system prompt (Fable 5.1) |
| Fable 5.1 Claude Code Desktop | Claude Code desktop app system prompt (Fable 5.1) · Fable 5 |
| Fable 5.1 Claude Code on the web | Claude Code on the web (cloud) system prompt (Fable 5.1) |
| Fable 5.1 Claude Code headless | Claude Code headless system prompt (Fable 5.1) |
| Opus 5 Claude Code | Claude Code system prompt (Opus 5) |
| Fable 5 Claude Code | Claude Code system prompt (Fable 5) |
| Opus 4.8 Claude Code | Claude Code system prompt (Opus 4.8) |
| Sonnet 5 Claude Code | Claude Code system prompt (Sonnet 5) |
| Claude Code (older models) | Opus 4.7 · Opus 4.6 · Sonnet 4.6 · Haiku 4.5 |
| Subagents | Claude Code subagent system prompts |
| Advisor tool | [Advisor tool prompts (b |
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