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The practice / 47 companies

The stack map

Every startup on the roster, placed on the layer of AI it works on. Read it top to bottom: the product a person uses sits on agents, agents sit on models, models run on inference, and all of it runs on rented GPUs, chips and power. A dashed box is a part of the stack with no roster company in it yet.

  1. 01 · 5 companies

    Applications

    What a person or a team actually uses — the finished product, in software or in the world.

  2. 02 · 14 companies

    Agents

    What an AI product is built from: the framework, where its code runs, what it remembers, and how it pays.

  3. 03 · 7 companies

    Trust & control

    Checking what an agent does before it ships, and what it is allowed to do once it is live.

  4. 04 · 6 companies

    Models

    The models themselves, and the tools that train and tune them.

  5. 05 · 10 companies

    Inference

    Turning a model into answers — in the cloud, or on a machine you own.

  6. 06 · 3 companies

    Compute

    The GPUs, rented by the hour or scheduled across a cluster.

  7. 07 · 2 companies

    Silicon

    The chips the work runs on.

  8. 08 · 0 companies

    Power

    The electricity under all of it.

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