AOS vs
Cognition (Devin).
An autonomous software engineer. AOS is the company around the engineer.
Devin from Cognition AI is an autonomous software engineer that takes engineering tickets and writes code end-to-end. It shines on well-scoped tickets with a clear, verifiable outcome. It is junior at execution, so independent testers see it finish only a fraction of open-ended tasks, and it does nothing outside engineering. AOS is the operating system around the engineer, with Engineering being one department out of eight.
It needs the ticket pre-chewed. Give it something open-ended and the success rate drops hard. Independent reviewers report it completing only a small share of real-world tasks.
Senior at reading a codebase, junior at shipping the change. You still review the work, and the soft-judgment calls are not its strength.
It is engineering and nothing else. The other seven departments of your business are not on the menu.
Use Devin when you want autonomous engineering output on well-scoped tickets. Use AOS when engineering is one piece of running your business.