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Writing · Field notes from the operating layer

Ideas for operating AI, not merely adopting it.

Essays, field reports, frameworks, and technical guides for the people responsible for making AI work.

Current essay · Models & Engineering

The AI Most People Haven't Met Yet

Chatbots continue and coordinate symbolic information. A different class of model represents how a bounded environment may change, often conditioned on action. Both are useful. Treating them as the same thing is why enterprise AI conversations keep talking past each other.

Choose your path

Start with the work closest to the decisions you make.

Editorial pillars

Six editorial lenses. Each starts from a point of view, not a topic label.

Active series

Multi-part arguments, ordered as published.

Series / qwen38-local-wow

Qwen3.8: Same Weights, Different Product

A five-part investigation into how the harness and serving stack make Qwen3.8-27B useful: the reasoning dial, the harness delta (raw local 2/8 → harnessed 8/8), verified demos, portfolio economics, and native 262K context on 32 GB.

5 published parts5/5 planned
Browse in archive

Series / agent-native-work

Agent-Native Work

A four-part series on designing work for agents: why software got them first, every domain's AGENTS.md, the verification gap, and the practitioner-builder.

4 published parts4/4 planned
Browse in archive

Series / llm-os-modes

Modes of the LLM OS

A six-part series on the operating modes behind frontier AI: Chat, Agent, Deep Research, Cowork, and owned infrastructure.

6 published parts6/6 planned
Browse in archive

Series / token-economy

The Token Economy

A strategy and architecture series on token economics, model portfolios, and AI factory operations.

3 published parts3/3 planned
Browse in archive

Series / context-compilation

Context Compilation

The missing systems layer between retrieval and reasoning, from benchmark blind spots to measured evidence.

3 published parts3/3 planned
Browse in archive

Series / autonomous-stack

The Autonomous Stack

The architecture of intelligent systems, from the data substrate to agent runtimes and prescriptive intelligence.

4 published partsOngoing
Browse in archive

Series / agent-societies

Agent Societies

A field guide to what happens when agents interact at scale, from emergence to competence.

4 published partsOngoing
Browse in archive

Series / ai-native-computer

AI-Native Computer

A technical and operating-model series on what changes when AI becomes the computer, not just another app.

3 published partsOngoing
Browse in archive

Complete index

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  1. Framework · April 5, 2026

    The Stack That Thinks: Putting It All Together

    The Autonomous Stack is four layers: data substrate, agent runtime, proactive intelligence, and human interface. When all four work together, intelligence compounds.

  2. Framework · March 29, 2026

    From Reactive to Prescriptive: The Proactive Agent Shift

    Today's agents wait to be asked. Tomorrow's will tell you what you're missing. The shift from reactive to prescriptive is where agents become genuinely valuable.

  3. Research Note · March 22, 2026

    The Runtime Wars: Agent Operating Systems Are Here

    Agent runtimes have crossed from frameworks to operating systems. ZeroClaw, OpenFang, and OpenClaw represent three competing philosophies for giving agents a durable lifecycle.

  4. Framework · March 15, 2026

    The Data Layer Nobody's Building

    Vector stores and RAG are table stakes. Real agent intelligence needs a continuous, multi-modal data substrate with episodic, semantic, relational, temporal, and contextual data.

Newsletter · The Operating Layer

The dispatch for people accountable for making AI work.

A biweekly note on governed enterprise AI, written from inside the operating problem.

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Writing | Brian Letort