# Cheng Lou 发布了开源项目 Freerange，使用 Fable 和 Sol 编写，旨在将 vibe coding 转向 proof engineering，从用户界面开始

- 来源：jason@jxnlco
- 发布时间：2026-07-21 09:52
- AIWatch 分数：43
- AIWatch 标记：未精选
- AIWatch 链接：https://aiwatch.icu/events/evt_01ky19fm04j06akx9f3wpatmyp
- 原文链接：https://x.com/jxnlco/status/2079392431544443053

## 精选理由

低价值或偏离 AI-Dev

## AI 摘要

Cheng Lou 发布了开源项目 Freerange，使用 Fable 和 Sol 编写，旨在将 vibe coding 转向 proof engineering，从用户界面开始。

## 正文

At its peak it had 50k lines of code. Was a long journey iterating & reducing it down to 18k today. The pivots were brutal

If I started it a few months earlier with worse models I'd have lost my mind. Thank you OpenAI for the internal model access!

Cheng Lou: My dear UI developers, ML practitioners, and fans of programming language:

Many months & billions of tokens later, I’m proud to present to you the first step in our long, long collective journey to turn vibe coding onto proof engineering, starting with: making user interfaces