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AI for Engineering

How engineers use AI, how to do it well, and what it means for your job. Written for people who ship and run the software, not people who build models.

457 articles · Updated Nov 12, 2026
Tiny figurines are welding a robotic mask over the photo on a giant ID badge.
AI Agents & Automation ·

What is an AI Roleplay Agent?

An AI roleplay agent plays the other side of a hard conversation so teams can practice. What it costs to buy vs. build, and how it actually works.

AI roleplay agentAI roleplay trainingbuild vs buy AI agent
A computer cursor snaps industrial metal scaffolding securely around the edges of a code editor window.
AI Coding Tools ·

The Rise of the AI Agent Harness: Securing Automated Coding

AI agent harnesses sandbox, log, and secure coding agents. Here's what they are, why DeepSeek, Zed, and OneCLI are all building one, and how they work.

AI agent harnesswhat is an AI agent harnessagent sandbox
A person holds a giant software subscription receipt and scratches out the $99 total with a thick red marker.
AI Models & Industry ·

The Zero-Marginal Cost AI Era Is Breaking SaaS Economics

AI inference costs fell 100x in two years, yet SaaS margins stayed near 80%. Here is why the subscription price never followed the token price down.

why is saas so expensiveai api pricing vs saassaas gross margins