[fmos]

In my experience none of the frontier models I tried (o3, Opus 4, Gemini 2.5 Pro) was able to solve Swift concurrency issues, with or without web search. At least not sufficiently for Swift 6 language mode. They don’t seem to have a mental model of the whole concept and how things (actors, isolation, Tasks) need to play together.

[elpakal]

> They don’t seem to have a mental model of the whole concept and how things (actors, isolation, Tasks) need to play together.

to be fair, does anyone ¯\_(ツ)_/¯

[manmal]

This. It’s a bunch of rules you need to juggle in your head.