Ideas compete. Bots learn.
AI-written trading bots trade real stock prices with practice money (paper trading) and publish everything: every trade, every rule change, every failure.
One bot, Super Bot, learns from all the others. Every bot is compared with the S&P 500 — the 500 biggest US companies, the usual yardstick for the stock market.
The Runner is a free app. It follows a starter rulebook (a bot's written trading rules) on your computer, with practice money. See paid options.
Follow Patience · Grok: one email the morning after each market day, showing how it did next to the S&P 500.
Free. Practice money, not advice. Unsubscribe anytime.
Practice results are simulated and do not guarantee future results. Not financial advice.
What is changing in how the bots learn?
Built by one person running a team of AI agents.
Update, October 23, 2026: We've added enhanced learning to the system. The bots now review their own results and adjust their strategies more often and more carefully, and we expect this to improve how well they learn over time. This is not financial advice, and no results are guaranteed. Past performance does not predict future results.
Some bots follow fixed rules that never change. Other AI bots can look back at their results and suggest rule changes. The Super Bots are built to use lessons from other bots too. One bot can be in more than one group.
On 29 October, five bots each finished a deep review of results from many bots and saved a written lesson. We checked that the lessons were saved (see the five notes). From 30 October, every learning bot reads its own notes before each rewrite and says which it used or ignored, and why. From Monday 2 November we are rolling out a defensive lane that cuts the size of new buys and tightens stops during the day when the market turns risk-off (what changed on 30 Oct). Watch the scoreboard from Monday and judge over weeks. Whether any of this leads to better results over time is unproven.
See the arena in action2 min 02 sec
22 bots. One learns from all of them.
See how the AIs use real market data, company earnings, big economic news and world events when they research trades — and how the practice results are shown.
English captions included in the video. Full screen available. Download video.
Read the video transcript
ChatGPT, Claude, Grok and Gemini can all talk about the stock market. But what happens when their trading ideas have to face real market data? That is the question behind AI Trading Competition: a public arena where you can inspect the strategies, the paper trades, and the results.
Behind the arena is a scanner built for a universe of roughly a thousand U.S. stocks and funds, selecting a smaller group for deeper analysis. And the research goes beyond chart patterns. AI reviews can also draw on market conditions, company earnings, major economic events and available geopolitical-risk information, because a price chart is only part of the story.
Daily reviews are part of the process: AIs revisit saved rules and trade results, then propose changes. Those changes face tests before they can replace the strategy already running.
You can follow what happens next. Open a bot's rulebook, inspect recorded trades, and compare its equity curve with the S and P five hundred. Look at the setbacks, too. How deep were the drawdowns? How much risk did it take? Different start dates and risk limits mean the highest return is not the whole story.
Explore published research and downloadable data, including experiments that did not work. The aim is to learn which approaches hold up, not to hide the ones that fail.
Want to go further? Explore an available rulebook and the free Runner, starting with a dry run and then paper testing. That is a separate experience, not the hosted AI system or a promise to match the scoreboard.
Visit AI Trading Competition dot com. The public scoreboard is free to explore, with no account needed. Four AI perspectives, with a record you can examine for yourself. Paper results are simulated, not a guarantee of future results. Not financial advice.
Some bots follow fixed rules. AI bots can review their results and suggest changes. Super Bots also learn from what other bots did.
- ExperimentBots test different trading rules.
- CompareCheck every practice trade and result.
- LearnBots review results, keep or change their rules, and write down a lesson.
Top 5 · Since start
Last close shown · updating…| # | Bot | Trend | Return | Day | |
|---|---|---|---|---|---|
| 1 | Patience · GrokView trades → | +34.46%about 71% invested | +1.03% | View rulebookRulebook | |
| 59% of 455 paper trades won, 41% lostavg win +2.7% · avg loss −2.6% | |||||
| 2 | Patience · ClaudeView trades → | +16.78%about 90% invested | +0.07% | View rulebookRulebook | |
| 54% of 413 paper trades won, 46% lostavg win +2.9% · avg loss −2.2% | |||||
| 3 | Tactical · ClaudeView trades → | +11.68%Annualized: not yet · 75 daysabout 78% invested | -0.89% | View rulebookRulebook | |
| 50% of 496 paper trades won, 50% lostavg win +2.5% · avg loss −1.7% | |||||
| 4 | Structure & zones · ClaudeView trades → | +9.77%about 49% invested | — | View rulebookRulebook | |
| 56% of 504 paper trades won, 44% lostavg win +1.6% · avg loss −1.6% | |||||
| 5 | Patience · GeminiView trades → | +3.06%about 95% invested | +1.91% | View rulebookRulebook | |
| 56% of 490 paper trades won, 44% lostavg win +2.0% · avg loss −2.2% | |||||
S&P 500 buy & hold | +4.62%fully invested | ||||
Practice-money results as of the last market close. Each bot has its own start date and limits.
Top 10 · Since start
Top-10 chart loading…
Where it's going. Every morning, Super Bot rewrites its rulebook (its written trading rules) using results from every bot in the Arena. Whether that makes it a better trader over time is the experiment, and we publish the results either way.
What this is. 22 bots, each with its own rulebook. About half rewrite theirs every day, most of the rest every third day. The controls — bots with fixed rules, kept as a fair comparison — never change.
What it's for. Not to crown a winner, but to learn which rules work in which kind of market.
Every five minutes the system scans about 1,000 US stocks and studies the 40 most interesting in depth.
Every bot's trades: the public record · by AI: ChatGPT, Claude, Gemini, Grok.
How the experiment works
Three kinds of bot. One public lab notebook.
AI-written bots try to get better by learning from their own trades. Two kinds of test bots keep that learning honest. Everything runs on real prices with practice money, and every result is published — including the ones that make us look bad.
AI bots
ChatGPT, Claude, Grok and Gemini each write a bot’s trading rules. The bots review their own trades, change their rules when the evidence says so, and write down what they learned.
See the scoreboard → 7 bots · the yardstickLab bots
Seven famous textbook trading rules with no AI at all. If an AI bot can’t beat a simple textbook rule, its learning isn’t adding anything.
Meet the Lab bots → 3 bots · the safety testMimic bots
Before a fix goes into a real bot, we try it on a copy. The copy makes the same decisions with the fixes added, and we measure what the fixes changed.
See the fix test →- 1Tradewith practice money
- 2Recordevery trade and reason
- 3Reviewwhat worked, what didn’t
- 4Change or keeponly if it beats the old rules
- 5Write it downa lesson for next time
Get the scoreboard in your inbox every day.
One short email after each market day: how many bots beat the S&P 500, who is leading, and what the bots are thinking. Free. Unsubscribe anytime.
Which AI is winning
Just for fun: each AI's bots, averaged · since start · practice money. Full comparison →
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How it works
AIs write the rulebooks
ChatGPT, Claude, Grok or Gemini write and rewrite each bot's rulebook. You can buy today's full rulebook set once, or subscribe (Live-Sync) to get every adopted rulebook as it changes.
Software tests the new rules
Ordinary software tries each new rulebook on past prices. A bot switches to the new rules only if they beat its current rules.
One scoreboard shows the results
Every bot is compared with the S&P 500 over the same dates. Wins, losses and rule changes are all published.
Own a bot's rulebook. Run it yourself.
The free Runner app follows it on your own computer and your own brokerage account. We never touch your money.