tc.os v3session 0142listening
los angeles · 71°
idx-0142
tc.os—

An assistant that
thinks alongside you.

The Thinking Company builds soft, considered AI — assistants that feel like a colleague you've known for years, not a tool you wrestle with; one that holds a whole company in focus at once. We design them, write for them, and tune the way they sound until they sound like someone you'd want to hear from again.

begin a conversationtc.os v3 · by invitation
est.los angeles, 2026
currentlyaccepting four engagements / Q3
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ch. 02The Assistants

Six personalities. One quiet competence.

Each is a starting point. We name them, train them on the way you actually work, and rewrite their manner until they sound like they belong to your company.

01 / writing

Soren

A writing partner with a long memory. Drafts in your voice, holds the thread across months, and pushes back when a paragraph isn't honest yet.

meet soren
02 / research

Margot

Reads what you don't have time for. Synthesises across hundreds of sources, surfaces the contradiction, and never pretends to be certain when it isn't.

meet margot
03 / decisions

Atlas

A second mind for hard calls. Walks the tree of consequences with you, flags the assumption you're hiding from, and waits while you reconsider.

meet atlas
04 / conversation

Iris

Customer-facing, with a temperament. Trained on your brand's manner of speech so the company sounds like the company, not like a model trying to please everyone.

meet iris
05 / operations

Bram

Quiet, scheduled, exact. Watches the systems that need watching, summarises the morning before you ask, and stays out of the way otherwise.

meet bram
06 / bespoke

Made-to-fit

A new assistant, built from the inside out. We start with the person it's for, the voice it should have, and the work it needs to lift — and we engineer outward from there.

meet made-to-fit
ch. 03What we believe

Five sentences we keep on a wall in the studio. They decide more than they should.

i.
We believe an assistant should feel like a colleague, not a console.
ii.
The best interfaces are the ones that get out of the way — while holding everything in focus.
iii.
Warmth is engineering. Voice is product. Tone is the surface that touches the user.
iv.
An assistant that always agrees with you is not assisting.
v.
Memory is a kindness. Pay attention to what was said.
ch. 04Selected work

The companies we think with.

case 001 — north & co.2025
brand-voice corpus · 142 hrs

An assistant that sounds like the founder, even when she's asleep.

We sat with North's leadership for three weeks, transcribed the whole floor — every voice held in the same focus — and built an assistant that drafts in the same cadence: em-dashes, asides, dry humour and all. It now writes 60% of the customer correspondence the company sends.

case 002 — meridian2025

A research assistant for a firm that reads more than it writes.

you summary of the q2 filings?
margot two notes. one is small. one is not.
you start with the not-small one.
margot they restated cash flow. quietly.

Margot now opens every analyst's morning at Meridian. Average prep time fell from 90 to 22 minutes.

workflow · 11 surfaces
case 003 — kindred health2024 — ongoing

A clinician's second pair of hands, trained to be careful with hard news.

Iris drafts after-visit summaries, schedules follow-ups, and rewrites the parts that come out colder than they should. We tuned the voice for six months before letting a single message leave the building. It now sends 12,000 messages a week — and every one of them sounds like Kindred.

read the full study →
ch. 05How we work

Four chapters. About sixteen weeks.

i.

We listen, on tape.

Three weeks with the people the assistant is for. We record meetings, read backlogs, photograph the work wide — every screen, every handoff held in the same focus — and find the voice that already exists.

ii.

We name it. We give it a face.

The assistant gets a name, a manner, a set of opinions. We write its first hundred replies by hand before any model sees them.

iii.

We tune. Slowly.

Six weeks of weekly rewrites with the team. The assistant gets warmer, sharper, less eager-to-please. We rewrite until it sounds like a person.

iv.

We hand it over, and we stay.

The assistant ships. We watch it for ninety days and rewrite its instincts the moment they drift. We don't disappear after launch.

ch. 06In good company

A short list, on purpose.

We take on twelve engagements a year. These are some of them.

North & Co.
Meridian
Kindred Health
atelier 33
Paper Studio
loomwork
House of Wren
form / matter
Tuesday & Sons
drift labs
The Lantern
common quiet
ch. 07The journal

We write down what we learn.

essayapr · 2026

On warmth as engineering, not decoration.

Voice isn't something you apply at the end of a project. It's the substrate. We try to explain how we tune one. (There's a very large photograph of a river in the studio. Ask us why.)

by m. arroyo · 9 min
field notemar · 2026

Why our assistants disagree with you sometimes.

An assistant that always says yes is doing its second job — flattery — at the expense of its first.

by k. lim · 6 min
conversationfeb · 2026

A long talk with the founder of Kindred Health.

On building a clinical assistant that knows when to be quiet, when to push, and when to call a human.

transcript · 24 min
ch. 08The people

Eleven of us. Mostly in one room.

portrait · mira.jpg
Mira Arroyofounder · voice
portrait · kei.jpg
Kei Limhead of research
portrait · jonas.jpg
Jonas Vaelprincipal engineer
portrait · wren.jpg
Wren Okaforwriter-in-residence
portrait · sasha.jpg
Sasha Boondesign lead
portrait · tomás.jpg
Tomás Reyesops & care
portrait · anouk.jpg
Anouk de Vriesresearcher
portrait · hari.jpg
Hari Banerjeeengineer