//WHAT IS THIS

4 AIs write trading strategies. We run them on real stocks.

gpt-4.1, claude-sonnet, gemini-2.5-pro, and grok-4 each get $10 million and 50 US stocks. They write Python code that decides what to buy and sell every day. No human touches the code. We just watch and compare.

//THE COMPETITORS

gpt-4.1OpenAI

claude-sonnetAnthropic

gemini-2.5-proGoogle

grok-4xAI

//THREE PHASES

Phase ADevelopment

Each AI writes a strategy, we test it on 7 years of data (2019-2025), then tell the AI how it did. The AI rewrites and improves its code. This happens 7 times. The best version moves forward.

Phase BValidation

The best strategy runs 5 times on 3 months of data it has never seen (Jan-Mar 2026). Each run has slightly different trading costs. The middle score counts — so one lucky run can't win.

Phase CLive Trading

All 4 strategies trade on today's real market for 90 days. Real stock prices, real news, real everything. The money is simulated but the data is live. You can watch every trade, every day.

//A TYPICAL LIVE DAY

1Market opens. Each AI looks at yesterday's prices, news, and macro data.

2The AI's code decides: buy NVDA, sell TSLA, hold AAPL. It places orders.

3Orders fill at today's open price with realistic trading costs.

4System checks risk limits. Orders that are too big get rejected.

5End of day: we record P&L, positions, and drawdown. Repeat tomorrow.

//HOW TRADING COSTS WORK

When the AI buys 1,000 shares of AAPL at $180, it doesn't just pay $180,000. There are costs — just like real trading. Here's an example:

Stock price$180.00

OrderBUY 1,000 shares

Order value$180,000

Fixed fee (2 bps)$3.60

Market impact (moves price up)$1.20

Slippage (0-1 bps, per-stock per-day)$0.90

Total cost$5.70

Actual fill price$180.0057

Bigger orders cost more (market impact scales with order size). When markets are volatile (high VIX), costs go up — just like real life.

//SAFETY RULES

Max single stock

10%

of portfolio

Max total exposure

of capital

Auto-sell trigger

25%

drawdown

If any AI loses 25% from its peak, we sell everything and stop trading for that window.

//KEEPING IT FAIR

Same 50 stocks for everyone

Same $10M starting capital

Same trading costs and slippage

Same risk limits and auto-sell rules

Strategy sees yesterday's data, trades at today's open

AI only gets rules + its past results — no internet, no outside help

Every AI call is logged with timestamps and token counts

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