- We compared the best Kalshi trading bots we could find on their own public pages on November 10, 2026: two hosted builders (Bot for Kalshi and Turbine), one product still on a waitlist (KalshiBot) and two open-source projects you run yourself.
- Hosted plans run from $29 to $199 a month. Bot for Kalshi is $99 a month with no free trial; Turbine starts at $29 a month.
- We found no ready-made bot for Gemini Predictions or OG. Gemini publishes a trading API you can build on. OG links to a preview API that requires separate account approval.
- We give no scores. We did not pay for or run any of these tools, so the comparison covers what each one states and what can be checked, not how well it trades.
Disclosure: PredictionsMarket.com earns referral commissions from Kalshi, Gemini and OG when readers sign up through our links (see our affiliate disclosure). None of the bot tools below is a partner, and none paid for or reviewed this page. Turbine runs an affiliate program; we have not joined it. Not financial advice. Automated trading can lose money quickly.
Most pages that rank the best Kalshi trading bots are written by a company that sells one. This page is independent of all of them. A trading bot is software that places orders on your exchange account by following rules, through the exchange's API (the interface programs use in place of the website). We read each tool's public pages, pricing and terms, and for the open-source projects the README and license files. We did not sign up, pay or place orders. Prices change often in this corner of the market, so every figure carries the date we checked it.
Best Kalshi trading bots at a glance
| Tool | Type | Venues | Price as checked | Test without money | Where your API key goes |
|---|---|---|---|---|---|
| Bot for Kalshi | Hosted, no code | Kalshi | $99 a month, up to 10 live bots, no free trial | Paper mode | Used by the hosted service; no withdrawal access; revocable at Kalshi |
| Turbine | Hosted, no code, with backtests | Kalshi and Polymarket | $29, $99 or $199 a month | Backtest and paper trading on every plan | Uploaded to a runner you manage, per its terms |
| KalshiBot | Hosted (waitlist only) | Kalshi | Listed at $29 and $79 a month | Not available yet | Its page says keys can trade but not withdraw |
| Kalshi AI Trading Bot | Open source (MIT), self-hosted | Kalshi | Free software | Paper mode | Stays on your machine |
| Kalshi Trading Bot CLI (Octagon AI) | Open source (MIT), self-hosted | Kalshi | Free software; needs an AI model provider key | Paper ledger and Kalshi's demo environment | Stays on your machine |
Exchange fees are separate from every price above. Our fee calculator shows what Kalshi charges on a position, and our guide to Kalshi bot strategy shows how those fees decide which rules are worth automating.
Hosted Kalshi trading bots
Bot for Kalshi
Bot for Kalshi turns a rule written in plain English into a bot for a Kalshi market. One plan, $99 a month, covers the builder and hosted running for up to 10 live bots. There is no free trial. Paper mode models fills and fees in a virtual account. The site says your funds stay at Kalshi, the service has no withdrawal access and you can revoke its key at Kalshi. It makes no results claims: its own FAQ says a bot will not make money on its own. Details are in our Bot for Kalshi review.
Turbine
Turbine, from TurbineFi, also builds a strategy from a plain-English description, and adds a backtest (a replay of the rule against past market data) before the bot runs in the cloud. Its pricing page lists three plans: Starter at $29 a month for 1 bot at a time, Basic at $99 for 3 and Pro at $199 for 5. Each plan also caps deploys per week. Backtesting and paper trading are on every plan. It covers Kalshi and Polymarket.
Two things set it apart. Its terms describe your venue credentials being uploaded to a runner you manage, and say the Turbine API is not in the credential upload path. That runner is a third-party server, so ask what it costs on top of the plan. And its homepage publishes backtest results for sample strategies, including one that lost money, each labelled a historical simulation. A backtest is not a live record, so read those as illustrations.
KalshiBot
KalshiBot was not open to customers when we checked. Its page offers a waitlist and lists a Starter plan at $29 a month and a Pro plan at $79. The page says it was targeting a private beta in the third quarter of 2026; on November 10 the sign-up buttons still led to the waitlist. The page shows speed claims and a sample trading session with a profit figure. With no product to inspect, none of that can be checked, so we list it only so you know what it is if you see the name.
Open-source Kalshi bots you run yourself
Open-source projects cost nothing to download, and your API key never leaves your own computer. The cost is your time: you install the software, keep it running and are responsible for every order it sends.
- Kalshi AI Trading Bot is a Python toolkit under the MIT license. Its README describes a signed Kalshi API client, market-data collection, position tracking and a paper mode, and says orders are previewed as a dry run unless you add a live flag. It is unusually direct about results: the README says many bots in this niche publish returns without settlement-level evidence, and that its own tooling is meant to test your record.
- Kalshi Trading Bot CLI, from Octagon AI, is a command-line tool under the MIT license. Its README lists what you need: a Kalshi account with API access and a key from an AI model provider, with an Octagon key optional. It includes a paper-trading ledger and a setting for Kalshi's demo environment.
Neither project is a set-and-forget product. Both can use an AI model to research markets, which adds a running cost and a source of error. Read the code and start in paper mode.
Gemini prediction markets bots
We found no hosted or open-source bot built for Gemini Predictions. What Gemini offers is the raw material. Its developer documentation covers placing prediction market orders over REST and WebSocket with an API key that has trading permission, and its builders page names bots among the things it expects developers to create. The same page says Gemini is exploring more builder tooling, including software kits and a command-line tool. For now, a Gemini prediction markets bot is one you write. Our Gemini Predictions review covers the exchange itself.
OG prediction markets bots
We found no ready-made bot for OG, the prediction market app from Crypto.com. OG's site links to Crypto.com API documentation that is marked as a preview. It describes REST and WebSocket trading, including placing, amending and cancelling orders, and says: "To access retail account and trading APIs, you must have an approved FCM account." It adds that this applies even if you already use OG.com. An FCM is a futures commission merchant, a registered broker, so this is a separate onboarding step through Crypto.com Exchange and not a key you create inside the OG app. Crypto.com's Exchange API page, aimed at institutions, market makers and data partners, shows its two Predictions rows as available over FIX (a protocol trading firms use), with REST and WebSocket marked "Coming soon". In practice, automating OG today means getting that approval and writing your own code. See our OG prediction market review for what the app offers.
What to check before you connect a bot
- Kalshi's terms. Kalshi's Developer Agreement says API use "is expressly limited to facilitating a members own trading on the Exchange" and prohibits "Facilitating trading or account creation by other members". It does not say how that applies to hosted bot services. Ask Kalshi before you connect one.
- Key permissions. Use a key that can trade but not withdraw, and know how to revoke it at the exchange.
- Total cost. Add the subscription, exchange fees and, for the open-source tools, AI model charges. A $99 plan needs $99 a month of trading gains after fees before it pays for itself.
- Results claims. A backtest or a screenshot is not a settled record. Some of these projects link to their own live records; none is independently audited, and we did not check them.
- Paper first. Every tool here that is open to customers has a paper or demo mode. Use it before any money is involved.
Where this comparison can go wrong
We did not run any of these tools, so we cannot say how reliably they place orders or how good their drafted rules are. Vendor pages change: prices, plan limits and features above are as stated on November 10, 2026. The list is not complete; dozens of hobby projects exist, and we included only tools with public pricing or a public license. A bot carries out a rule and does not make the rule sound. For other research tools, see our guide to the best AI tools for Kalshi, and for live prices our crypto markets page.
Frequently asked questions
What is the cheapest Kalshi trading bot?
The open-source projects are free to download, though their AI research features need a key from an AI model provider, which is usually paid. Among hosted tools open to customers on November 10, 2026, Turbine's Starter plan at $29 a month was the lowest listed price.
Is there a trading bot for Gemini prediction markets?
We found no ready-made one. Gemini publishes an API for placing prediction market orders, so a developer can write a bot against it.
Is there a trading bot for OG?
We found no ready-made one. OG links to a preview trading API, but its documentation says you need an approved FCM account through Crypto.com Exchange, even if you already use OG.com.
Are Kalshi trading bots allowed?
Kalshi's Developer Agreement permits using its API for your own trading as a member of the exchange. It prohibits facilitating trading by other members and does not address hosted bot services directly, so confirm with Kalshi before connecting a third-party tool.
The short version: for Kalshi there are two hosted builders you can use today and capable open-source projects if you can run code; for Gemini you would build your own; for OG there is a preview API behind a separate approval and no ready-made bot. New to the exchange itself? Start with our Kalshi review.