> I highly doubt a RTX 5090 can run anything that competes with Sonnet 3.5 which was released June, 2024.
I don't know about the capabilities of a 5090 but you probably can run a Devstral-2 [1] model locally on a Mac with good performance. Even the small Devstral-2 model (24b) seems to easily beat Sonnet 3.5 [2]. My impression is that local models have made huge progress.
Coding aside I'm also impressed by the Ministral models (3b, 8b and 14b) Mistral AI released a a couple of weeks ago. The Granite 4.0 models by IBM also seem capable in this context.