18 Nov 2025

Most have noticed the explosion of AI-driven software development. Engineers are planning, writing, and shipping code faster than ever. But, if AI means more code, shouldn’t it also mean more testing? And if there’s more testing, where are all the new breakthrough quality assurance (QA) companies?

What’s surprising is there aren’t many. Even A16Z’s “The Trillion Dollar AI Software Development Stack” barely touches on the advances in QA and lists no companies in that space. This gap isn’t because people aren’t trying, it’s because they are finding out how hard automating QA is.

The discovery

I realized this after starting the Antler accelerator. I joined building Trailway.ai, an AI agent that …

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