Beast Mode for Claude Code(and other Code Agents)

Important Updates

  • Update at March 1, 2026. The “Beast Mode” is totally outdated. Current SOTA model(opus 4.5, opus 4.6, sonnet 4.6) could do much better out-of-the-box.
  • Update at Oct 11, 2025. With Claude Sonnet 4.5 and gpt-5-codex, I think I do not need beast mode anymore. Just give a hint, read doc from “https://” and follow the instruction, AI Coding Agent will handle the rest.

So what is Beast Mode?

It’s a typical prompt engineering / context engineering trick that allows you to get the most out of Claude Code or other code agents.

2025 Week 27: Quick Update

Long time no see!

It has been a while since last time I wrote something.

I did have some expressions to share. I logged them into my Notion, and the next time I review them days later, I think, fine, that thing is not that important, I can just let it go.

Professional Stuff

AI Coding Assistant

The last time I talk about AI coding assistant was in 2024 Week 46 Weekly Recap.

Saturday

Saturday, the weather is nice.

I originally wanted to just bring a book to the library and read for the afternoon.

But I remembered that I haven’t finished things before the deadline (DDL), so I had to bring my computer as well.

2024 Review: 40 questions to ask yourself every year

Several days ago, I read Xuanwo’s 2024 Review - 40 questions to myself, I think I should also make one, to make my life look like it is not that boring.

1.What did you do this year that you’d never done before?

  • We had a wedding.
  • I started a new career as indie developer, bootstrapped Boring Design
  • I moved from Hangzhou to Vancouver.
  • I started to learn web 3 systematically.

2. Did you keep your new year’s resolutions?

No. I do not think I have new year’s resolution. Should I make one?