Vibe-wise, it seems like progress is slowing down and recent models aren't substantially better than their predecessors. But it would be interesting to take a well-trusted benchmark and plot max_performance_until_date(foreach month). (Too bad aider changed recently and there aren't many older models;
https://aider.chat/docs/leaderboards/by-release-date.html has not been updated in a while with newer stuff, and the new benchmark doesn't have the classic models such as 3.5, 3.5 turbo, 4, claude 3 opus)