THE STACK / LAYER 02 OF 4

BITS

The software layer. The harness around the mind.

Bits are everything between the model and the business: the harness, the tools, the agents, the ingestion, the retrieval, the evals, the loops. When you buy a hosted AI product, this layer is mostly what you are paying for. It is also the layer you can build and own outright.

This is where software factories live. Specs go in, criticism is wired into the loop, and working systems come out. The scarce skill is no longer writing the code. It is designing the factory that writes the code, and knowing exactly where a human must remain in the loop.

We do not sell prompts. We install factories.

Projects in this layer

  • Software factory builds: complete operating layers around open and frontier models, deployed inside client firms by SelfBuiltSystems.
  • Leyline AI: applied AI systems built on these rails.
  • The loops practice: harness and eval architecture, documented in the essays.