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Why Long AI Sessions Cost So Much More Than Short Ones

Why Long AI Sessions Cost So Much More Than Short Ones

by Marissa Wright | Jul 20, 2026 | The Economics of Agentic AI

I measured a month of my own AI usage: 4.57 billion tokens across 30 days. The most useful thing I found had nothing to do with which model I picked. Most advice about controlling AI cost is advice about prompting. Write tighter instructions. Pick a cheaper model....
Why I Didn’t Build a Multi-Agent AI Role-Based Development Architecture

Why I Didn’t Build a Multi-Agent AI Role-Based Development Architecture

by Marissa Wright | Jul 7, 2026 | The Economics of Agentic AI

My AI architecture is deliberately simple. Four decades of technology commercialization domain experience is the reason it works. There is a dubious pattern making the rounds among AI “vibe coders”: stand up a team of autonomous agents, assign each one a role – a...

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