Anh Hoang — by day, I build; by night, I write. One life, told as a single day.

By day, I build.

Systems · problems · things that scale

>_ Enter the Atelier

By night, I write.

Journeys · people · what stays

~ Open the Log
Currently → laying foundations for ideas at BA-AI Lab, and still curious about the world.
The Solar Cycle

One life, told as a single day —
from first light to lamp light.

Four rooms, four hours of the sun. Begin anywhere.

DawnRootsWhere it beginsNo titles, just a road. My roots, and the principles I chose to grow by.Enter →NoonAtelierSystems & engineeringA log of building infrastructure, systems taken apart, and the hammer blows that sharpen an engineer's thinking.Enter →Golden hourExpeditionsJourneysLands I have crossed, frames that made me stop — the world through the eyes of someone out looking for it.Enter →LamplightLogNight notesPages written once the day has closed: the smell of coffee, the places I have passed through, and the quiet discipline of becoming myself.Enter →

Fresh ink

All entries →
Sep 2026

Who Stuffs the Text, Who Draws the Path

Function calling, LangGraph, Structured Outputs and a lesson from MoE: the model keeps the right to reason, but the right to turn a string of tokens into an action has moved to the harness, a layer of code with a graph, typed state, a runtime and an audit trail.

Atelier · Noon
Sep 2026

ReAct, the Cut String, and Outsized Expectations of a Technology Still Too Young

MRKL, ReAct, Toolformer, regex parsers, the apology loop, virtual departments and the unsigned tape, reread from the original papers, commits and issues: early agents saw the future clearly, but had to build it on a contract written in prose.

Atelier · Noon
Sep 2026

Ask Nicely, Stuff the Context… and Still Not Have a System

GPT-3, InstructGPT, the original RAG, the geometry of embeddings and Lost in the Middle, read from the papers: asking nicely and stuffing the context change what the model sees, not what the system may do or how it proves it did it.

Atelier · Noon