* Software security - I.e. Mozilla blog post on using Mythos for software security [1]
* Algorithms - AlphaEvolve makes real progress on matrix multiplication [2]
* Open source - Backlog crushing in openvpn [3]
* Corporate - CloudFlare Oauth workers [4]
People are clearly using AI to ship real work that people end up using directly or indirectly. Projects like Godot are also in a weird spot though.
[1]. https://blog.mozilla.org/en/privacy-security/ai-security-zer...
[2] https://arxiv.org/abs/2506.13131
[3] https://stanislas.blog/2025/12/claude-code-opus-open-source-...
That already happened. Redot is a major fork that's more community-driven and positive. They're also fine with AI use, as long as you review, understand, and take responsibility for everything you do with it. https://github.com/Redot-Engine/redot-engine
They're also building a brand new game engine from scratch! https://github.com/Redot-Engine/DraconicEngine
If someone thinks they're building better open source with their AI, let them fork; their AI can maintain downstream. If it's really better, people will join the fork. Good luck.
In all likelihood anyone attempting this will realize the value that a maintainer provides. On the odd chance they discover a new working model and produce better software, all the better, everyone wins.