Ten years ago, everyone said the iPad Pro would replace the Mac. Five years ago it was the phone's turn. Then the AI era arrived, and every developer I know is on a Mac with Claude Code running underneath — the value went up, not down.

Why? After turning it over for a while: three old tickets that all happened to board the Agent ship at the same time.

1. Apple Silicon: the greenhouse of local inference

The M-series performance-per-watt still has no rival. My machine is a dev box by day and runs whisper transcription and local small models by night — the fan can't even be bothered to spin.

AI doesn't equal cloud. Local inference is the final answer to privacy and latency, and the Mac is the only laptop that "runs it quietly." Everyone else either lacks the performance or takes off like a jet when they try.

2. It's Unix

Agents live in the shell. Claude Code and codex, the tools I use daily, are terminal programs; the toolchains they call — git, ssh, rsync, cron — are all citizens of the POSIX world.

Running an agent on my Mac feels almost identical to running one on my own server. That sounds mundane until you live with it: configs, scripts, muscle memory, all portable. I've fought with WSL on Windows too — it runs, but the "one layer removed" feeling never leaves. It's like showering in a raincoat.

3. Thirty years of automation legacy

This is the most overlooked and most valuable one: macOS has deposited a thirty-year automation corridor — AppleScript, URL schemes, Shortcuts, Accessibility.

These ancient interfaces suddenly got hot again in the AI era, because they happen to be a ready-made "agent control surface": text in, text out, no human touching the GUI. No other platform's desktop apps can be remote-controlled the way a Mac's can.

I'm planning a whole separate post on this — consider the hole dug.

4. Closing

So the Mac's value isn't charity from Apple. It's a Unix foundation, Apple Silicon efficiency, and thirty years of automation legacy — three old things that all happened to hit the Agent era's frequency at once.

Whichever way the era turns, that's the best computer there is.