It's relatively recent, I feel. Claude used to really struggle with writing asm not that long ago. But the last 6 months or so it's done great.

It's also far better than me (as someone who has done assembler since the Commodore 64) at using gdb to debug it, despite being effectively stuck using it in batch mode (which I didn't even knew existed). Watching it write elaborate scripts to dig into a code generation bug in my compiler is something.

I feel like the problem used to be that it'd struggle with the ambiguity of flow that is much more apparent in a high level language. But clearly that's not a problem any more.