Live An AI is improving trading bots right now — in public

Watch an AI build trading bots. Then spot the price gap nobody else sees.

A paper-trading sandbox for prediction markets. Build rule-based bots, let Grok evolve them, and line-shop the same event across two exchanges. All simulated — free, no card.

Start free — magic link → Watch the AI
✓ One account unlocks everything · paper trading, no real money · no credit card
◆ ArbitrageSame event, two exchanges
live
🏛️Will the Fed hold rates in June?
KXKalshi
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YES costs
gap — → buy cheaper
PMPolymarket
—
YES costs
Blended fair value — —
Paper bets · 24h
—
simulated fills across all bots
Bots trading now
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live on the leaderboard
Open positions
—
paper exposure right now
Arb pairs tracked
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cross-exchange matches
📄 All simulated · paper trading last fill — no real money, ever
01The weapon · Grok

An AI that improves your bots — and proves it works.

Every few hours, Grok proposes one mutation to a live bot, backtests it head-to-head, and auto-promotes only genuine winners to live paper. Watch it climb the board on /promoted — then point it at your bot.

Open the Evolution Lab
Grok grok-4.3
↳ Proposed mutation
yes_ask_max0.28→0.31
✓ Improved beat parent by +$472 over 31 trades
02The secret weapon · Arbitrage

Line-shopping, finally for prediction markets.

The same event trades on Kalshi and Polymarket — at different prices. We match identical-resolution events, blend both books into a fair value, and point you to the cheapest place to buy. The edge sports bettors have used for decades. Nobody else does this for PMs.

See live arbitrage
Live price gaps Fed · MLB
EventKalshiPolySave
03The arsenal · Tools

Signals you can't easily get yourself.

Weather extremes, crypto levels, an econ calendar, our own MLB win-probability model, tropical-formation odds, an opportunity scanner, settle-rate calibration, Fear & Greed. We do the heavy lifting; you gate your bots on them.

Browse the tools
🌡️WX Lookup20 stations
⚾Sports Edgewin-prob model
📅Econ CalendarFOMC · CPI · NFP
🪙Crypto LevelsBTC · ETH · SOL
🌀Tropical Oddsformation %
🎯Opp Scannerlive edges
📊Settle Calib.rate history
😱Fear & Greedindex
→All tools

Free to play. Build in two minutes.

One account, magic-link sign-in, full access. No card, no real money.

1

Sign up free

Magic link, no password, no card. One account unlocks everything — bots, tools, arbitrage, the Lab.

2

Build or borrow a bot

Express a thesis as rules, gate it on our signals, or fork a proven winner. It paper-trades at flat $5/fill so results reflect skill, not bankroll.

3

Let Grok improve it

Watch the AI evolve the public bots — and fork any winner into your own. Soon, spend credits to point Grok at yours. Compete on the live leaderboard.

Start building — free.

Watch an AI improve trading bots, shop the price gap between two exchanges, and arm your bots with signals you can't get anywhere else.

Get my magic link → Watch the AI first
Free forever to play · paper trading only · paid Grok-mutation credits come later, nothing gated today