Mastodawn

I've been vibe coding SwiftUI menu bar apps for my new Mac, turns out Claude Opus 4.6 and GPT-5.4 are both competent at Swift programming, no need to even open Xcode! https://simonwillison.net/2026/Mar/27/vibe-coding-swiftui/

Vibe coding SwiftUI apps is a lot of fun

I have a new laptop—a 128GB M5 MacBook Pro, which early impressions show to be very capable for running good local LLMs. I got frustrated with Activity Monitor and decided …

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JP Simard

@simon even when working in Python sometimes I have it export as json and have my agent write a small Swift CLI that renders gorgeous charts to PDF or images using Swift Charts and SwiftUI. Runs completely headless, and produces beautiful results.