A Guide to Which AI to Use in the Agentic Era
www.oneusefulthing.org- Category
- Education
- Pricing
- Free
- Type
- ARTICLE
- Builder
- @emollick
- Added
- Jul 21, 2026
About
An explanatory guide that breaks down how to choose AI tools in 2025 by understanding three layers: models (the AI brains), apps (products you use), and harnesses (systems that let AI take actions and complete tasks). It walks through the current landscape of ChatGPT, Claude, and Gemini and their various coding agents and desktop tools.
Why it made the leaderboard
It gives you a reusable three-layer framework — models, apps, and harnesses — for reasoning about which AI tool fits a given task, cutting through the confusion of overlapping ChatGPT/Claude/Gemini coding agents and desktop products.
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aillmclaudechatgptgeminiagentsguide
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