Some people seem to think writing a C compiler is hard work. Well, yes, if you’re writing it in assembly language, it is. But I hate to break it to you: Computer science undergraduates write C compilers every semester. Heck, you can learn to do it yourself thanks to Daniel McCarthy’s Developing a C Compiler From Scratch online class. And the class will cost you a lot less than the $20,000 it cost Anthropic.



As the article says : a C compiler without assembler nor linker is a very standard undergraduate project.
Good students are supposed to be able to do it alone, average students in groups of around 4.
So for AI that’s supposedly “PhD level in everything” ; this shouldn’t be considered that impressive, even less so with 16 of them on the case…
Seems like even they know their claims are super overstated.