> “It appears my post generated far more attention than I intended… with a lot of speculative reading between the lines.. Just to clarify… Windows is NOT being rewritten in Rust with AI.
Do you have any idea just how much code is in Windows?
I did a quick search and estimates are in the 50-60 million lines range.
No way in hell are they going to rewrite all that in a few years. Even if they actually wanted to, which they don't because it would be a truly enormous expense (even for Microsoft).
Not to even mention that huge software projects have a well deserved reputation for failing, and the scope of such a rewrite would probably dwarf any previous rewrite of anything, ever, and by a very large margin.
"Rewrite all of Windows in Rust" simply does not even begin to pass the sniff test.
Good news, because part of the original post was that engineers should soon be able to handle a million lines of code a month. So 60 engineers to birth an OS in a month.
… Our strategy is to combine AI *and* Algorithms to rewrite Microsoft’s largest codebases. Our North Star is “1 engineer, 1 month, 1 million lines of code,” Galen Hunt, who is a top-level Distinguished Engineer at Microsoft, wrote in a now-edited LinkedIn post.…
Maybe he did not say Windows, but it is not a leap to imagine it falls under the umbrella of “largest codebases”
https://www.windowslatest.com/2025/12/24/microsoft-denies-re...
> “It appears my post generated far more attention than I intended… with a lot of speculative reading between the lines.. Just to clarify… Windows is NOT being rewritten in Rust with AI.
> My team’s project is a research project. [...]