The Model Is the Smallest Part: A Free Field Guide to Production AI
Sixteen published deep-dives, four modules, one operating thesis. The harness around the model is the product. Free.
The AI Runtime covers one idea from many angles: in production, the model is the smallest part of the system. Reliability, value, and defensibility come from the harness around it, the context it is given, the evaluations that gate it, and the identity it runs under.
The new Field Guide collects the sixteen deep-dives that build that thesis into one curated reading path. Read them in order to install the full mental model, or jump straight to the module that matches the problem on your desk this week.
What’s inside: 100% free. 16 deep-dives.
The operating thesis in one read: why the model is the smallest part of a production system
Module 01: the three deep-dives that install the mental model
Module 02: five production agents torn down, including Rogo, HockeyStack, and Mintlify
Module 03: context engineering, the eval lifecycle, and the real cost of running it
Module 04: the agent-identity security frontier, from the trenches
A bonus career track, plus the named frameworks (MRE, VAA, Harness Topology) collected in one place
New pieces land three times a week across Model Reliability Engineering, Vertical Agents, and Lessons from the Trenches. Subscribe free to get them as they ship.


