---
title: "Claude system prompts as a git timeline"
source_name: "Simon Willison's Weblog"
original_url: "https://simonwillison.net/2026/Apr/18/extract-system-prompts/#atom-everything"
canonical_url: "https://www.traeai.com/articles/45ea062c-4d41-4b88-a5ee-d1c8149497d2"
content_type: "article"
language: "英文"
score: 8.5
tags: ["LLM","Anthropic","Claude","系统提示","Git"]
published_at: "2026-04-18T12:25:00+00:00"
created_at: "2026-04-19T03:41:14.254986+00:00"
---

# Claude system prompts as a git timeline

Canonical URL: https://www.traeai.com/articles/45ea062c-4d41-4b88-a5ee-d1c8149497d2
Original source: https://simonwillison.net/2026/Apr/18/extract-system-prompts/#atom-everything

## Summary

Simon Willison 将 Anthropic 发布的 Claude 系统提示历史转化为 git 时间线，便于追踪和比较不同版本间的变更。

## Key Takeaways

- Anthropic 公开了 Claude 各版本系统提示的 Markdown 文档
- 作者将其拆分为按模型和版本组织的文件并模拟 git 提交历史
- 利用 git 工具可高效分析系统提示的演进与差异

## Content

Title: Research: Claude system prompts as a git timeline

URL Source: http://simonwillison.net/2026/Apr/18/extract-system-prompts/

Published Time: Sun, 19 Apr 2026 02:13:36 GMT

Markdown Content:
# Research: Claude system prompts as a git timeline

# [Simon Willison’s Weblog](http://simonwillison.net/)

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18th April 2026

Research[Claude system prompts as a git timeline](https://github.com/simonw/research/tree/main/extract-system-prompts#readme)— Anthropic's published system prompt history for Claude is transformed into a git-based exploration tool, breaking up the monolithic markdown source into granular files and timestamped commits. By structuring extracted prompts per model, family, and revision, researchers can leverage `git log`, `diff`, and `blame` to trace prompt evolution, compare differences, and attribute changes to specific dates—all without manual parsing.

Anthropic [publish the system prompts](https://platform.claude.com/docs/en/release-notes/system-prompts) for Claude chat and make that page [available as Markdown](https://platform.claude.com/docs/en/release-notes/system-prompts.md). I had Claude Code turn that page into separate files for each model and model family with fake git commit dates to enable browsing the changes via the GitHub commit view.

I used this to write my own [detailed notes on the changes between Opus 4.6 and 4.7](https://simonwillison.net/2026/Apr/18/opus-system-prompt/).

Posted [18th April 2026](http://simonwillison.net/2026/Apr/18/) at 12:25 pm

## Recent articles

*   [Changes in the system prompt between Claude Opus 4.6 and 4.7](http://simonwillison.net/2026/Apr/18/opus-system-prompt/) - 18th April 2026
*   [Join us at PyCon US 2026 in Long Beach - we have new AI and security tracks this year](http://simonwillison.net/2026/Apr/17/pycon-us-2026/) - 17th April 2026
*   [Qwen3.6-35B-A3B on my laptop drew me a better pelican than Claude Opus 4.7](http://simonwillison.net/2026/Apr/16/qwen-beats-opus/) - 16th April 2026

This is a **beat** by Simon Willison, posted on [18th April 2026](http://simonwillison.net/2026/Apr/18/).

[ai 1967](http://simonwillison.net/tags/ai/)[generative-ai 1745](http://simonwillison.net/tags/generative-ai/)[llms 1712](http://simonwillison.net/tags/llms/)[anthropic 272](http://simonwillison.net/tags/anthropic/)[claude 269](http://simonwillison.net/tags/claude/)[system-prompts 52](http://simonwillison.net/tags/system-prompts/)
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