Python's widely-used "requests" library now has at least one commit with a "co-contributed" tag by claude: https://github.com/psf/requests/commit/b2a1d33f571518ca9a6148e7da787cc5827f897a
What blows my mind about this is that the contents of this commit is... a version bump. That's it, a version bump.
This guy used the most expensive technology on the planet to perform a version bump. Bravo, dude, what a stunning performance.