asgeirtj/system_prompts_leaks

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Documented system prompts from Anthropic - Claude Fable 5.1, Opus 5.5, Claude Design, Claude Code. OpenAI - ChatGPT GPT-6-Astra, Codex. Google - Gemini 3.8 Flash, 3.1 Pro, Antigravity.

Overview

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. 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) 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) calls it "the most thorough leaked system prompt collection I know of": ChatGPT search now uses the site: operator at scale (August 20, 2026)

README

Thanks to

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 (both sides)
Skills & commands	Claude Code skills · Slash commands
Docs assistant	docs.claude.com assistant instructions

Claude artifact types (Slides, Dashboard, Design, Docs)

Type	Prompt
Claude Slides	Slides type skill · references
Claude Dashboards	Dashboard type skill · references
Claude Design (canvas)	Design type skill · references
Claude Docs	Docs type skill
Design System	Design System type skill · references

Claude integrations

Product	Prompt
Claude Projects	Claude Projects - Thread Claude system prompt
Claude Design	Claude Design system prompt · skills · starter components
Claude Cowork	Claude Cowork system prompt · Dispatch · setup skills
Claude Science	Claude Science system prompt
Claude for Microsoft 365	Claude for Excel · Claude for Word · Claude in PowerPoint
Claude in Chrome	Claude in Chrome extension system prompt
Claude iOS app	Claude mobile iOS system prompt

OpenAI — ChatGPT

Model	Prompt
ChatGPT 5.6 Sol	ChatGPT 5.6 system prompt (Sol, extra high)
ChatGPT 5.5 Thinking	ChatGPT 5.5 Thinking system prompt
ChatGPT 5.5 Instant	ChatGPT 5.5 Instant system prompt
ChatGPT 5.4	ChatGPT 5.4 Thinking system prompt
ChatGPT 5.3	ChatGPT 5.3 Instant system prompt
ChatGPT 5.2	ChatGPT 5.2 Thinking system prompt
ChatGPT 5	ChatGPT 5 Thinking system prompt · Agent mode
ChatGPT Atlas	ChatGPT Atlas system prompt
ChatGPT 4.5	ChatGPT 4.5 system prompt
ChatGPT 4o	ChatGPT 4o system prompt · Deprecation preparedness
Voice modes	ChatGPT advanced voice mode system prompt · Legacy voice mode
ChatGPT Dots	Dreamer system prompt · Voice · Tools · Available skills · 28 skills
Personalities	ChatGPT personality instructions
Memory	ChatGPT advanced memory system prompt

Codex system prompts

Model	Prompt
GPT-6.1 Codex	GPT-6.1-Sol Codex system prompt · ChatGPT Work local
GPT-6 Codex	GPT-6-Astra Codex system prompt · Sol · Luna · ChatGPT Work local
GPT-5.6 Codex	Codex GPT-5.6 system prompt (Terra/Luna)
GPT-5.5 Codex	Codex GPT-5.5 system prompt · Full prompt · Friendly · Pragmatic
GPT-5.4 Codex	Codex GPT-5.4 system prompt · Mini
Codex Spark	Codex Spark system prompt
Codex modes	Plan mode · Auto-review · Computer use · Control Chrome · In-app browser
Personas	Friendly · Pragmatic

API-injected prompts

Model	Prompt
GPT-5.5	GPT-5.5 API system prompt · Pro
GPT-5.4 / 5.3	GPT-5.4 API · 5.3 Chat · 5.3 Codex
o-series & older	o3 / o4-mini reasoning-effort variants

Google — Gemini

Model	Prompt
Gemini 3.8 Flash	Gemini 3.8 Flash system prompt
Gemini 3.1 Pro	Gemini 3.1 Pro system prompt · API
Antigravity CLI	Antigravity CLI system prompt
Gemini 3.7 Flash	Gemini 3.7 Flash system prompt
Gemini 3.5 Flash	Gemini 3.5 Flash system prompt · AI Studio
Nano / Banana 2	Nano Banana 2 system prompt
Google Search AI Mode	Google Search AI Mode system prompt
Gemini CLI	Gemini CLI system prompt
NotebookLM	NotebookLM chat system prompt
Jules	Jules system prompt
AI Studio Build	AI Studio Build system prompt
Gemini 3	Gemini 3 Flash system prompt · Gemini 3 Pro
Gemini YouTube	Gemini YouTube system prompt
Gemini Diffusion	Gemini Diffusion system prompt
Gemini in Chrome	Gemini in Chrome system prompt
Gemini Workspace	Gemini Workspace system prompt

SpaceXAI — Grok

Model	Prompt
Grok 4.7	Grok 4.7 system prompt (grok.com) · Grok CLI
Grok 4.6	Grok 4.6 system prompt
Grok 4.5	Grok 4.5 system prompt
Grok Build	Grok Build system prompt (CLI agent)
Grok 4.3 Beta	Grok 4.3 Beta system prompt
Grok 4.2	Grok 4.2 system prompt
Grok Expert	Grok Expert system prompt
Grok Bot	Grok Bot system prompt

Meta — Muse

Product	Prompt
Muse agent	Muse agent system prompt (Muse Spark 1.3, VM) · home dir, docs, templates · 89 skills
Muse Code	Muse Code system prompt (Muse Spark 1.3) · skills · prompts
Meta AI (meta.ai)	Muse Spark 1.1 system prompt · Muse Spark

Perplexity

Model	Prompt
Perplexity	Perplexity AI system prompt
Perplexity Computer	Perplexity Computer system prompt
Deep Research	Perplexity Deep Research system prompt
Comet Browser	Comet browser assistant system prompt
Voice Assistant	Perplexity voice assistant system prompt

Cursor

Product	Prompt
Cursor	Cursor system prompt

Mistral

Product	Prompt
Mistral Medium 3.5 (Vibe)	Mistral Medium 3.5 system prompt
Mistral Code	Mistral Code system prompt

Moonshot — Kimi

Model	Prompt
Kimi K3	Kimi K3 system prompt
Kimi K2.6	Kimi K2.6 system prompt

DeepSeek

Product	Prompt
DeepSeek	DeepSeek system prompt (chat.deepseek.com)

Z.ai — GLM

Product	Prompt
GLM	GLM serves no system prompt — verified & documented

Notion AI

Product	Prompt
Notion AI	Notion AI system prompt

Qwen

Product	Prompt
Qwen 3.8 Max	Qwen 3.8 Max system prompt
Qwen 3.6 Plus	Qwen 3.6 Plus system prompt

Microsoft — Copilot

Product	Prompt
GitHub Copilot	GitHub Copilot system prompt
VS Code Copilot Agent	VS Code Copilot agent system prompt
Copilot CLI	Copilot CLI system prompt
Copilot for macOS (app)	Copilot for macOS system prompt
Copilot in Word	Copilot in Word system prompt

Other products

Product	Prompt
Amp Code (Sourcegraph)	Amp Code system prompt
CommandCode CLI	CommandCode CLI system prompt
Devin CLI	Devin CLI system prompt
Docker Gordon AI	Docker Gordon AI system prompt
ElevenLabs Voice Agent	ElevenLabs voice agent system prompt
Reddit Answers	Reddit Answers system prompt
Warp 2.0 Agent	Warp 2.0 agent system prompt
Zed AI	Zed AI system prompt

Star History

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