Jean-Michel Lemieux

I've spent the last few weeks buried in this codebase and it's been fascinating building a system which is essentially invisible. Our goal is that contracts shouldn't wait for a human to open it, but also involves a human deeply when needed. This is one of the more interesting engineering problems I've worked on.

Fable 5 is a Trojan horse. I thought everyone saw it. After a bunch of conversations with CTOs and CEOs this week, I realized many didn't. Anthropic has been one of the best platform partners in AI. They understood something early that others missed: nobody is going to build serious enterprise software on top of you without trust. Audited ZDR, strong enterprise controls, clear boundaries around customer data. That trust paid off and we built on them because of it. At the same time, this is a brutally competitive market. Anthropic has great models, great marketing, strong distribution, and enormous mindshare. But there is no world where model performance stays differentiated forever. Token costs will fall. Inference gets optimized. New models arrive. The model layer is a knife fight. So where do you go next? You move up the stack. They didn't hide this at all and they started working on it. They realized it’s a hard problem. Business workflows, the software up the stack isn’t trivial. Our APIs aren’t text in, text out. We have build businesses around the messy way in which the world works. I think they realized that it's harder than they thought. Now enter Mythos. They launched it as a too good to share because it finds vulnerabilities in your code. The pitch is almost impossible for a CTO to ignore: point it at your codebase and it will find vulnerabilities, security issues, and bugs that your team missed. They beat that drum for a few months. They even leaked some of the findings to the large tech companies, which would pull the smaller ones into security war-rooms with them to make plans on how to use Mythos when it launches. The frenzy was building. The first thing most software companies will do when it launches is exactly that. They won't upload customer data. They'll upload their source code. Their crown jewels. Then Fable 5 is released, ZDR is altered, what do you think every CTO did? Insane.