Fly brain simulation trades crypto on Coinbase, shows early losses
Fly brain linked to Coinbase trades crypto
A Coinbase software engineer has connected a digital model of a fruit‑fly’s brain to the exchange’s AI trading system. The simulated brain can buy, sell or hold Bitcoin (BTC), Ethereum (ETH), USD‑Coin (USDC) and Solana (SOL) based on live market prices.
Key numbers
- Initial capital: $100 (USD)
- Current holdings: $59 USDC, $5 BTC, $17 ETH, $17 SOL
- Net result after one day: loss of almost $1
Official statement
On September 10 2026, engineer Alex Wormuth posted on X that he gave the fly brain $100 to trade Bitcoin. He explained that dopamine‑like neurons are stimulated when the fly makes a profit and that neuron activity drives the buy‑sell decisions executed on Coinbase.
Connectome background
The simulation uses a detailed connectome released by Google and the Howard Hughes Medical Institute Janelia Research Campus. The map covers an adult male fruit‑fly brain and ventral nerve cord, containing about 166,000 neurons and 125 million synaptic connections. The project took roughly 20 years and is the largest brain map by neuron count to date.
Other developers’ experiments
Several hobbyists have reported using the same brain model for unrelated tasks. One user claimed the fly could parallel‑park a Mini Cooper S and perform a three‑point turn, while another said it solved a Rubik’s Cube and played Beat Saber. An AI researcher demonstrated the fly in a Minecraft environment, moving a virtual insect based on the reconstructed neural network. These reports are presented as user‑generated claims and have not been independently verified.
What is confirmed
- The fly brain model is linked to Coinbase’s AI trading platform.
- It trades BTC, ETH, USDC and SOL using live price data.
- After one day of activity, the model’s portfolio is down by about $1.
- The underlying neural map was published by Google and Janelia, detailing 166 k neurons and 125 M synapses.
Unclear aspects
- Whether the model can become profitable over a longer period is unknown.
- The technical details of how neuron activity translates into trade orders have not been disclosed.
- Claims about the brain performing non‑trading tasks remain anecdotal.
Why it matters
This project shows that a biological‑inspired neural network can be interfaced with a cryptocurrency exchange. It offers a novel testbed for studying how brain‑like decision making interacts with financial markets, and it highlights the potential of using detailed connectomes in AI applications.
