Claude Code has a big problem

Prime has an epic rant on this.

My terminal is now a triple-A game engine that only renders monospace fonts

Being open source would really make things better. Corporate: “no”

It's high time to build t3.code

"So basically we use react because it makes it easier for the engineers" I thought AI was supposed to replace all their engineers or something tho?

T3 chat is still not open source. When are you gna do it Theo?

React/Typescript devs again showing everybody that when all you have is a hammer, everything looks like a nail

If they open source Claude Code and everyone gets to see the slop they built with infinite Opus 4.5 their reputation will collapse (even more)

I think it’s time for Casey to go, "hold my beer…"

I ran some benchmarks relevant to the render bottleneck with Claude Code, and Theo is exactly right. The challenge comes from treating the entire scrollback (standard buffer in the video) as interactive and dynamically rewrapped. I ran some rough benchmarks on terminal emulator throughput to see how much this is feasible in principle. For a medium to long chat, modern terminal emulators on modern hardware are already pretty close to at the limit of being able to *accept* that much text+ANSI data in under 16ms. I'm not surprised that they had to reengineer a diff-based renderer to meet their requirements.