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Which prediction market bot builder should you use?

Rivo, Turbine and Bot for Kalshi let you build a bot for Kalshi or Polymarket without hosting code, and Kairos says you should trade by hand instead. They differ on what a bot can trade on, whether it proves itself before it spends, and what it costs. Here is what each one does, from its own pages.

How the Rivo builder worksJump to the table

Vendor pages reviewed September 23, 2026. Rivo is one of the products compared.

At a glance

Prices are the published monthly price. Venue fees are charged by Kalshi and Polymarket on top of every product here.

Vendor pages reviewed September 23, 2026. "Not described" means the reviewed page does not say, not that the product lacks it.
RivoTurbineBot for KalshiKairos
What it isTerminal with a three-step bot builderPlain-English AI strategy builderPlain-English visual bot builder for KalshiMulti-venue trading terminal, no bots
What a bot trades onA proven trader's positions, or incoming trades that fit your signalPrice, indicators and data feeds described in plain EnglishTriggers over Kalshi market data, Bitcoin and sports firstNothing; you trade
Copy a specific traderYes, from their real recordNoNoNo
BacktestYes, at your size, with out-of-sample holdoutYes, against historical dataPaper testing; historical backtest not on the reviewed pageNo
Paper modeEvery bot starts on paperNot statedYesNo
Live executionYour own Kalshi, Polymarket US or Gemini accountConnected Kalshi and Polymarket accountsYour own Kalshi API key, no withdrawal accessFrom the terminal on connected accounts
VenuesKalshi, Polymarket, Polymarket US, GeminiKalshi, PolymarketKalshiKalshi, Polymarket, Predict.fun
HostedYesYes, runs with your laptop closedYes, hosted monitoring and executionYes
Limits on botsNone1, 3 or 5 bots at a time; 10, 100 or 400 deploys a week by tierUp to 10 live botsNot applicable
API and AI accessREST API and remote MCP server includedNot describedAI-assisted building in usage windowsNot described
Price$15/month$19, $99 or $199/month; $4,999 one-time founder plan$99/month, no free trialNo platform fee

How a Rivo bot makes its trades

  1. 1You pick who or what the bot trades

    A trader with a winning record, or a signal you build from incoming trades: size, entry price, category, venue, keywords, the exact markets you want.

  2. 2It backtests at your size before it runs

    The bot replays the trader or the signal at the amount you will actually use, on markets that already resolved, and shows the record and the return.

  3. 3It runs on paper until the record earns real money

    Every trade it would have made is recorded with virtual money and scored when the market settles. You watch it work before you fund it.

  4. 4Then it trades through your own account

    Promote it to live on Kalshi, Polymarket US or Gemini. It places real orders through your own account inside a per-trade and a per-day ceiling you set. Rivo never holds your money.

Build a bot

What a Rivo bot does

Rivo is a prediction market terminal with a bot builder inside it. You pick who or what the bot trades, it backtests that at your size, it runs on paper until the record earns real money, and then it trades through your own account. Every bot works that way, and you can move a bot between alerts, paper and live without rebuilding it.

Who or what it trades

A trader bot copies one trader. Kalshi traders are visible by name and Polymarket wallets by address, and Rivo tracks both continuously, recording every trade we observe and scoring it when the market settles. You choose the trader from that record, not from a leaderboard number they reported. Two or more traders can share one bot.

A signal bot trades incoming trades that fit a signal you build: venue, category or league, minimum trade size, keywords in the market title, specific markets, an entry price band, and whether the trade opened a position, added to one or flipped sides. Four templates give you a working signal in one click. Rivo does not offer indicators such as moving averages, because they do not predict a binary outcome and a backtest built on them would lie to you.

What you know about a trader before the bot copies them

Every profile shows the real profit curve, the win rate measured against the odds the trader paid, results by bet size and by category, the markets they trade most, their biggest wins, a weekday-by-hour heatmap, streaks by market, and a simulator that replays copying them at $25, $100 or $250 a trade over the last 7, 30 or 90 days. The profile hands the trader straight into the builder.

What the backtest shows

For a trader, the record, the return and the drawdown at your size. For a signal, every match from the last 90 days, scored, and split into an older training window and a recent validation window. A signal that wins on training and loses on validation is flagged as an overfit risk. Sweeps on the entry price and the minimum size show where a threshold matters. Every number is a paper result at the trader's entry price on markets that already resolved, and the page says so.

Three modes

Alerts only tells you when the bot would have traded, in the app or on Telegram. Paper records every trade with virtual money and scores it on settlement; a signal bot can claim up to three months of matching history so it starts with a record. Live places real orders. You promote a paper bot to live from its own page.

What a live bot will and will not do

  • It places entries only. Closing stays your decision, or a stop-loss and take-profit rule you arm per position.
  • It stops at a per-trade ceiling and a per-day ceiling. Presets start at $5 a trade and $25 a day.
  • It skips a trade that has aged past the copy window, a book too thin to fill, or a price that has already decided the outcome, and logs the reason.
  • It pauses itself after three consecutive execution failures. A thin book does not count.
  • On Kalshi it sizes down to the depth inside your slippage boundary instead of pushing through a thin book.

Venues and custody

Paper bots run on Polymarket, Polymarket US, Kalshi and Gemini. Live bots run on Kalshi through your own API key, on Polymarket US through your connected Polymarket US account, and on Gemini through your connected Gemini account. Polymarket Global orders are signed in your browser wallet, so a bot there stops at alerts and paper and the terminal's trade ticket places the order when you decide to. Rivo never holds a balance, never asks for a wallet private key, and cannot withdraw from any account you connect.

Code and agents

Every bot is available through the REST API and the MCP server, so you can drive it from Python or from Claude. A trader bot is a follow and a signal bot is a strategy in the API. A live bot needs a trade-scoped key with an explicit confirmation on every call, and a per-key daily spend cap fails closed.

What it costs

$15 a month for everything, with no limit on bots, no charge per bot and no cut of your trades. Just one trade can pay for it. Venue fees are paid to the venue.

Turbine

Turbine's headline is "Build Prediction Market Strategies in Plain English". You chat with an AI, it turns the description into a strategy, you backtest it against historical data, and you deploy it to run hosted. Its examples lean on technical signals such as EMA, VWAP and momentum, with Coinbase data for crypto markets. Tiers are $19 a month for one bot at a time and ten deploys a week, $99 for three bots and a hundred deploys, $199 for five bots and four hundred deploys, and a $4,999 one-time founder plan. It does not copy a specific trader.

Bot for Kalshi

Bot for Kalshi is Kalshi-only, with a plain-English visual builder whose nodes cover triggers, market selection, order logic and safeguards, AI assistance in usage windows, paper testing, and hosted execution through your own Kalshi keys with no withdrawal access. Its current focus is Bitcoin and sports markets. The Complete plan is $99 a month for up to ten live bots, due at signup with no free trial. It does not copy specific traders.

Kairos

Kairos is an a16z-backed terminal that aggregates Kalshi, Polymarket and Predict.fun into one order book with advanced order types, fast execution and no platform fee. It does not automate strategies and does not copy trade. If you want to trade by hand across venues it is a strong choice. It is not a bot builder.

Pick the one that fits

  • You want a bot that copies traders with a record, or trades on incoming whale trades

    Rivo. It is the only one of the four that builds a bot from real trader records, and the only one where every bot proves itself on paper before it can go live.
  • You want to describe a technical strategy in plain English

    Turbine for Kalshi and Polymarket with a backtesting engine and tiered deploy limits; Bot for Kalshi for a Kalshi-only visual builder with paper testing at a flat $99.
  • You want faster manual trading, not a bot

    Kairos. One aggregated book across three venues, advanced orders, no platform fee, and no automation.

Frequently asked questions

What is a prediction market bot builder?

A hosted product where you set up a trading bot for Kalshi or Polymarket without writing and running code yourself. The builders differ on what the bot can trade on: Rivo bots trade when a proven trader opens a position or when an incoming trade fits your signal; Turbine and Bot for Kalshi bots trade on rules over market data that you describe in plain English.

Which builder is cheapest?

Rivo at $15 a month with unlimited bots. Turbine starts at $19 a month for one bot at a time and ten deploys a week, rising to $99 and $199 for more. Bot for Kalshi is $99 a month for up to ten live bots. Kairos is a terminal rather than a builder and charges no platform fee.

Which builders backtest?

Rivo backtests a trader or a signal at your size on resolved markets with an out-of-sample holdout. Turbine has a backtesting engine against historical data. Bot for Kalshi's page emphasises paper testing rather than historical backtesting. Kairos does not build bots.

Which builders can copy a specific trader?

Only Rivo. Turbine and Bot for Kalshi build rules over market data; neither describes copying a named trader or wallet. Kairos is a manual terminal.

Do any of them hold my money?

None of the four. Rivo, Turbine and Bot for Kalshi place orders through your own venue credentials; Bot for Kalshi states explicitly that it has no withdrawal access. Kairos executes from its terminal on your connected accounts.

Is this comparison independent?

No. Rivo writes this page and is one of the products compared. Every claim about another product comes from that vendor's own site on the review date, and where a page does not say something the table says so.

Build a bot from the record and not from a hunch

Pick a trader or a signal, backtest it, run it on paper, promote it to live. $15/month. Just one trade can pay for it. Trading involves risk of loss.

Build a bot

Related

  • Prediction market bot builder
    Build a bot in three steps: a trader or a signal as the trigger, a backtest at your size, then alerts, paper or live on your own account.
  • Polymarket copy trading bots compared
    Kreo, PolyCop, PolyGun, Polycopy and Rivo on custody, trader records, backtesting, paper mode and fees.
  • Best Kalshi trading tools
    Rivo, Kairos, Bot for Kalshi and WhaleTracks compared on price, data, testing and execution.
  • Backtesting
    Score a trader or a signal against resolved Polymarket and Kalshi markets before the bot runs.
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