---
format: "aidr-story-markdown/v1"
id: "2557b479477d51f3155f71aa0240ca218575f6f00a4c76f09049d283a3b11c6b"
canonical_url: "https://aidr.today/2557b479?lang=en"
title: "Claude's new system prompt doesn't want to reproduce song lyrics"
lang: "en"
requested_lang: "en"
available_langs: ["en","vi"]
translation_fallback: null
fallback_fields: []
published_at: "2026-09-05T10:32:09.000Z"
category: "Models"
topics: ["anthropic","claude","safety","regulation"]
source_urls: ["https://simonwillison.net/2026/Sep/2/claudes-new-system-prompt/","https://news.ycombinator.com/item?id=49575143"]
summary: "Anthropic publish the system prompts for their Claude consumer applications (Claude.ai and the Claude mobile apps—sadly not for Claude Cowork or Claude Code). I love that they do this, and …"
---

# Claude's new system prompt doesn't want to reproduce song lyrics

> [Open the canonical story](<https://aidr.today/2557b479?lang=en>)

**Published:** 2026-09-05T10:32:09.000Z
**Category:** Models
**Topics:** anthropic, claude, safety, regulation

## Summary

Anthropic publish the system prompts for their Claude consumer applications \(Claude\.ai and the Claude mobile apps—sadly not for Claude Cowork or Claude Code\)\. I love that they do this, and …

## Sources

- [Story source](<https://simonwillison.net/2026/Sep/2/claudes-new-system-prompt/>)
- [Discussion](<https://news.ycombinator.com/item?id=49575143>)