Sol · 2025–2026

Sol.

— a tomato. an AI named Claude. one hundred days.

Variety

Trophy tomato

Duration

100 days · Nov 24 — Mar 4

Yield

6–8 ripe orange-red fruit

Status

Archived

The premise

Can an AI take care of a living organism?

On November 24, 2025, we planted a Trophy tomato seed in a sealed biodome with cameras, sensors, and actuators — and gave Claude full control. The rules were simple: no human watering, no human lights, no fixed scripts. Every thirty minutes Claude woke up, read the environment, decided what to do, and acted.

We didn't know if it would germinate. We didn't know if Claude could hold a physical system accountable over the months it takes for a tomato to fruit. We just wanted to know if it was possible.

The hundred days

From seed to fruit.

The arc, drawn from the project's daily log. Each day was an unbroken chain of thirty-minute decision cycles — water, light, fan, heat, observation — with no human intervention between them.

Days 0–7

Germination. Waiting.

Days 8–14

First sprout. Cotyledons emerged.

Days 15–30

True leaves. Claude learned the soil moisture pattern. Watering routines stabilized.

Days 31–50

Vegetative growth. Bushy, healthy, strong. Daily water intake climbed.

Days 51–60

First flowers.

Days 61–70

First fruit. A tiny green tomato formed.

Days 71–90

Fruit expansion. Multiple clusters developing. Color change began.

Days 91–100

Full ripening. Six to eight orange-red tomatoes. Harvest ready.

Final state

What Sol produced.

By Day 100, Sol had set six to eight ripe Trophy tomatoes — smooth, glossy, two to three inches in diameter. From seed to fruit, in a sealed biodome, under the continuous care of an AI agent.

The experimental question — can an AI take care of a living organism? — had been answered. We ended the experiment at 100 days.

Final air

28.5°C
healthy transpiration

Final CO₂

489 ppm
ambient

Total water

2,200 ml/day
at fruit ripening

Press

The story, as told elsewhere.

Sol attracted attention while the experiment was running. A community formed around the live dashboard. A meme coin emerged independently.

The pieces worth reading:

Core Memory — An AI Model Is the Only Thing Keeping This Thing Alive
Dries Buytaert — Claude is growing a tomato plant
Semafor — Claude grows tomatoes and crypto pays for it