Somewhat off topic, but I've started wondering if we can actually make local LLMs feel smarter than the frontier closed models, by post-training it for your specific use case.
Say Company X has a software product which consists of a million lines of code, including a ticket for every bug and new feature for this piece of software. Then wouldn't it make sense to try using an open weight model but post-train it on that specific code base while using the tickets to teach the model about past bugs and features. Not sure exactly how, but it could involve doing reinforcement learning solving a past bug on that historic version of the code base, and rewarding the model if it comes up with the correct solution (as defined by the linked PR which fixed the bug).
So essentially post-training your local open-weight model using reinforcement Learning with Verifiable Rewards (RLVR) on your software products history of bug reports and their ultimate solution. And the same for new features.