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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.

개요

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

View this README on GitHub

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