This is one of those topics where the conventional wisdom doesn’t quite hold up.
This is one of those topics where the conventional wisdom doesn’t quite hold up.
I code daily — not as a professional software engineer, but as a teacher and writer who builds his own tools. I’ve used all three of these AI coding agents seriously over the past several months: Devin (Cognition AI’s autonomous agent), Claude Code (Anthropic’s terminal-based coding agent), and Cursor (the AI-first IDE). They’re solving different problems in different ways, and the “which is best” question has a boring but accurate answer: it depends.
I’ve spent a lot of time researching this topic, and here’s what I found.
I was surprised by some of these findings when I first dug into the research.
Ever noticed this pattern in your own life?
Have you ever wondered why this matters so much?
Devin AI: The Autonomous Agent
Devin is designed for autonomous, multi-step software engineering tasks — the kind where you give it a high-level goal and it independently plans, codes, tests, and debugs. In its original 2024 demo, it solved SWE-bench problems autonomously at rates that shocked the industry.[1] In practice, my experience is more nuanced:
I believe this deserves more attention than it gets.
Related: digital note-taking guide
Last updated: 2026-04-06
Your Next Steps
- Today: Pick one idea from this article and try it before bed tonight.
- This week: Track your results for 5 days — even a simple notes app works.
- Next 30 days: Review what worked, drop what didn’t, and build your personal system.
About the Author
Written by the Rational Growth editorial team. Our health and psychology content is informed by peer-reviewed research, clinical guidelines, and real-world experience. We follow strict editorial standards and cite primary sources throughout.
References
Sources cited inline throughout this article.
