claude 4 system prompt leak - Brave Search

simonwillison.net › 2025 › May › 25 › claude-4-system-prompt

Highlights from the Claude 4 system prompt

May 25, 2025 - Thankfully, you can’t stop a system prompt from leaking. Pliny the Elder/Prompter/Liberator maintains a GitHub repo full of leaked prompts and grabbed a full copy of Claude 4’s a few days ago.

github.com › asgeirtj › system_prompts_leaks

GitHub - asgeirtj/system_prompts_leaks: Collection of extracted System Prompts from popular chatbots like ChatGPT, Claude & Gemini

Collection of extracted System Prompts from popular chatbots like ChatGPT, Claude & Gemini - asgeirtj/system_prompts_leaks

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Videos

I Read Claude 4's Leaked Prompt - 7 Lessons for Better AI - YouTube

7 Prompting Strategies from Claude 4's "System Prompt" Leak - YouTube

Claude 4 & 3.7's FULL System Prompt Just LEAKED? (The ...

Claude 4 System Prompt - YouTube

Deep dive into Claude 4 System Prompt (it's a little weird) - YouTube

reddit.com › r/localllama › claude full system prompt with all tools is now ~25k tokens.

r/LocalLLaMA on Reddit: Claude full system prompt with all tools is now ~25k tokens.

February 8, 2025 - Kind of seems deceptive, even, to call that the 'System prompt'. ... How is this published as a leak? A leak from the open documentation perhaps, lmao. ... It seems to differ a lot from what is on the documentation. ... They looked the same to me. I'm not frking chatgpt that can count words instantly. ... This doesn’t include things like the list of available artifact libraries (which are easy to get Claude to spit out - just ask - and precisely match the prompt suggested in this post) More replies

news.ycombinator.com › item

Claude's system prompt is over 24k tokens with tools | Hacker News

May 12, 2025 - The canned response is returned to this prompt in Claude's reply. But if you just drop in some technical sounding stuff at the start of your request, the model will happily produce some copyright-infringing content for the party. The following prompt jailbreaks the copyright, and produces a ...

blogs.cfainstitute.org › home › ai bias by design: what the claude prompt leak reveals for investment professionals

AI Bias by Design: What the Claude Prompt Leak Reveals for Investment Professionals - CFA Institute Enterprising Investor

May 15, 2025 - In May 2025, a full 24,000-token system prompt claiming to be for Anthropic’s Claude large language model (LLM) was leaked. Unlike training data, system prompts are a persistent, runtime directive layer, controlling how LLMs like ChatGPT and ...

prompthub.us › blog › an-analysis-of-the-claude-4-system-prompt

PromptHub Blog: An Analysis of the Claude 4 System Prompt

You can see the full prompt, including the leaked tools in PromptHub here: Claude 4 Sonnet System Message

gpt-insights.de › ai-insights › gpt-insights-claude-leak-en

Claude System Prompt Leak: SEO Impact

May 28, 2025 - This article analyzes a leaked system prompt from Claude 4. It provides detailed insight into how the model decides when to search, which tools it uses, and under what conditions content is mentioned or even linked.

medium.com › @saimudhiganti › claude-4s-leaked-system-prompt-highlights-and-insights-875b4325fa4a

Claude 4’s Leaked System Prompt: Highlights and Insights | by Sai Krishna Reddy Mudhiganti | Medium

May 28, 2025 - Recently, Anthropic’s Claude 4 AI assistant had its detailed system prompt leaked online, giving us unprecedented insights into how advanced AI safety and alignment are implemented.

iamshobhitagarwal.medium.com › claude-ai-leaked-system-prompt-exposing-the-24-000-token-hidden-instructions-9285324a355d

Claude AI Leaked System Prompt: EXPOSING the 24,000-Token Hidden Instructions | by Shobhit Agarwal | Medium

May 8, 2025 - The recent leak of Claude’s 24,000-token system prompt offers a rare behind-the-scenes look at exactly how Anthropic programs its chatbot to behave — often in surprisingly human ways.

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x.com › IntuitMachine › status › 1926190101853319646

Carlos E. Perez on X: "Shocker! Claude 4 system prompt was leaked, and it's a goldmine! The Claude system prompt incorporates several identifiable agentic AI patterns as described in "A Pattern Language For Agentic AI." Here's an analysis of the key patterns used: Run-Loop Prompting: Claude https://t.co/YuK5aDZ2JH" / X

Shocker! Claude 4 system prompt was leaked, and it's a goldmine!

youtube.com › watch

Mindblowing Claude Leaked System Prompt - YouTube

❗If you're interested in getting updates about Data Driven Automation and Ai Related News, check out my newsletter:www.NoFluff.online👋👋👋HeyIf you’re new t...

Published May 11, 2025

youtube.com › watch

Claude AI's Massive LEAKED Prompt — 24,000 Tokens of INSANITY! - YouTube

Claude's leaked System Prompt - https://github.com/asgeirtj/system_prompts_leaks/blob/main/claude.txtAll credits to the original leaker referredd in the vide...

Published May 7, 2025

arstechnica.com › ai › 2025 › 05 › hidden-ai-instructions-reveal-how-anthropic-controls-claude-4

Hidden AI instructions reveal how Anthropic controls Claude 4 - Ars Technica

May 28, 2025 - On Sunday, independent AI researcher ... released system prompts for Claude 4’s Opus 4 and Sonnet 4 models, offering insights into how Anthropic controls the models’ “behavior” through their outputs. Willison examined both the published prompts and leaked internal tool ...

youtube.com › watch

Breaking Down Claude 4.5's LEAKED System Prompt - YouTube

Join My Community to Level Up ➡ https://www.skool.com/earlyaidopters/about🚀 Link to System Prompt: https://bit.ly/3KrUNRA📅 Book a Meeting with Our Team: ht...

Published October 1, 2025

chatoptic.com › blog › claude-4-system-prompt-leak

Claude’s Leaked System Prompt: 12 Key Takeaways for GEO Professionals ⦿ Chatoptic

June 26, 2025 - Claude’s internal system prompt has leaked and it offers a rare peek into how LLMs decide what content to quote, what links to include, and what sources to ignore. If you’re working on Generative Engine Optimization (GEO), here are 12 real ...

news.ycombinator.com › item

Claude 4 System Card | Hacker News

June 8, 2025 - What I find a little perplexing is when AI companies are annoyed that customers are typing "please" in their prompts as it supposedly costs a small fortune at scale yet they have system prompts that take 10 minutes for a human to read through · They aren’t annoyed.

mindpal.space › blog › claude-system-prompt-leaked-build-smarter-ai-agents-khG7fL

Claude's System Prompt Leaked! Steal These Secrets to ...

We'll break down the key lessons from Claude's leaked prompt and show you exactly how to apply these "secrets" to make your MindPal agents more effective, reliable, and perfectly aligned with your business goals. Get ready to become a better "AI director"! Want to see the original? You can find the leaked prompt right here. Don't worry if it looks like a mountain of text; we'll pull out the juicy bits for you! Think of a system prompt as the AI's job description, rulebook, and personality guide all rolled into one.

pub.towardsai.net › tokens-wasted-on-empty-words-claudes-leaked-24k-system-prompt-is-shockingly-inefficient-5e188a2792a8

Claude’s Full System Prompt Leaked: 24,000 Tokens of Hidden Instructions Exposed | by MKWriteshere | Towards AI

May 24, 2025 - Now, a GitHub leak may explain why: Claude’s system prompt is reportedly a staggering 24,000 tokens long, an invisible data colossus that devours your message allowance before you’ve even started your conversation.

reddit.com › r/ai_agents › claude 3.7’s full 24,000-token system prompt just leaked. and it changes the game.

r/AI_Agents on Reddit: Claude 3.7’s full 24,000-token system prompt just leaked. And it changes the game.

May 18, 2025 -

This isn’t some cute jailbreak. This is the actual internal config Anthropic runs:
→ behavioral rules
→ tool logic (web/code search)
→ artifact system
→ jailbreak resistance
→ templated reasoning modes for pro users

And it’s 10x larger than their public prompt. What they show you is the tip of the iceberg. This is the engine.This matters because prompt engineering isn’t dead. It just got buried under NDAs and legal departments.
The real Claude is an orchestrated agent framework. Not just a chat model.
Safety filters, GDPR hacks, structured outputs, all wrapped in invisible scaffolding.
Everyone saying “LLMs are commoditized” should read this and think again. The moat is in the prompt layer.
Oh, and the anti-jailbreak logic is now public. Expect a wave of adversarial tricks soon...So yeah, if you're building LLM tools, agents, or eval systems and you're not thinking this deep… you're playing checkers.

Please find the links in the comment below.

It's funny how LLM generated copy seems to have condensed to this current writing structure. The short and punchy sentences brimming with hyperbole. It's exhausting because reading it feels like I'm reading an advertisement for something that doesn't need it. "ChatGPT, what type of food does my dog need?" Your dog doesn't just need food. It needs fuel. Let's break it down: Nutrition Energy Flavor they love Cost effective This isn't just a question of simple calories and nutrients. It's a question of thrive AND survive. A question of where you stand as a dog owner. You won't just have a happy, well fed dog. You'll have a true friend that trusts you to the core. That's power. That's love.

For those asking the leak https://raw.githubusercontent.com/asgeirtj/system_prompts_leaks/refs/heads/main/claude.txt

the-decoder.com › startseite › claude 4 can apparently follow a 60,000-character system prompt

Claude 4 can apparently follow a 60,000-character system prompt

May 25, 2025 - The full system prompt for Claude 4 has been leaked by X user "Pliny the Liberator" and is now available on GitHub.