Open Source Agent Analytics
Understand your agents in production
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 a live data dashboard from this repo's files: System prompts and what they tell us about the chat before the chat (July 10, 2026)
System Prompts Leaks
Leaked system prompts, captured verbatim — the hidden instructions and rules that ChatGPT, Claude, Gemini, Grok and every other AI chatbot receives before your first message.
Recently Updated
| What | Date | Link |
|---|---|---|
| Codex GPT-5.6 (Sol variant) | July 26, 2026 | Codex GPT-5.6 system prompt (Terra/Luna) · Sol |
| Grok 4.5 | July 26, 2026 | Grok 4.5 system prompt |
| Claude Opus 5 | July 24, 2026 | Claude Opus 5 system prompt · Claude Code (Opus 5) |
| Claude Design (full prompt + 53 tools + 22 skills + 10 starter components) | July 23, 2026 | Claude Design system prompt · skills · starter components |
| Perplexity | July 17, 2026 | Perplexity AI system prompt |
| Claude Code (new models) | July 16, 2026 | Claude Code system prompt (Fable 5) · Sonnet 5 |
| OpenCode · Pi · CommandCode | July 16, 2026 | OpenCode system prompt · Pi system prompt · CommandCode CLI system prompt |
| Kimi K2.6 | July 14, 2026 | Kimi K2.6 system prompt |
| Perplexity Deep Research | July 14, 2026 | Perplexity Deep Research system prompt |
| DeepSeek | July 14, 2026 | DeepSeek system prompt |
| ChatGPT 5.6 | July 10, 2026 | ChatGPT 5.6 system prompt (Sol, extra high) · Codex GPT-5.6 system prompt |
Anthropic — Claude system prompts
Claude.ai system prompts (web, desktop & mobile)
| Model | Prompt |
|---|---|
| Claude Fable 5 | Claude Fable 5 system prompt |
| Claude Opus 5 | Claude Opus 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 |
|---|---|
| Claude Code (Fable 5) | Claude Code system prompt (Fable 5) |
| Claude Code (Opus 5) | Claude Code system prompt (Opus 5) |
| Claude Code (Opus 4.8) | Claude Code system prompt (Opus 4.8) |
| Claude Code (Sonnet 5) | 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 |
| Skills & commands | Claude Code bundled skills · Slash commands · Skills |
| Injected reminders | Claude Code injected reminders |
| MCP servers | Claude Code MCP server system prompts |
| Docs assistant | docs.claude.com assistant instructions |
Claude integrations
| Product | Prompt |
|---|---|
| Claude Design | Claude Design system prompt · skills · starter components |
| Claude Cowork | Claude Cowork system prompt · Dispatch |
| 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 system prompts
| 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 |
| Personalities | ChatGPT personality instructions |
| Memory | ChatGPT advanced memory system prompt |
Codex system prompts
| Model | Prompt |
|---|---|
| Codex GPT-5.6 | Codex GPT-5.6 system prompt (Terra/Luna) · Sol |
| Codex GPT-5.5 | Codex GPT-5.5 system prompt · Full prompt · Friendly · Pragmatic |
| Codex GPT-5.4 | 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 |
| Old models | GPT-4.5 · GPT-4.1 · GPT-4.1 Mini · o3 · o4-mini · GPT-5.2 Mini (free) · ChatGPT 4o Mini |
| Old 4o variants | 4o WhatsApp · 4o new personality · [Monday GPT](OpenAI |