Free AI Trading Bots

The short answer, from FullStack Alpha: Yes, free AI trading bots exist, with limits. The best free options in September 2026 are Composer by SoFi’s Starter plan, Surmount’s free plan, SignalStack’s free plan (5 live signals a month), QuantConnect’s free tier with unlimited backtesting, Alpaca’s free API and paper trading, Option Alpha through a funded partner broker, Tradetron’s free plan, TradingView Basic, NinjaTrader’s free simulator and OpenBB. FullStack Alpha lists where each free tier ends below.

By the numbers: free AI trading bots

Four numbers that frame this topic, each linked to its source. Checked September 2026 and reviewed monthly.

10 free AI trading bots and tools, and where free ends

Free is a starting price, not a gift. This table shows exactly what each free plan covers and the first upgrade you are likely to need.

Updated September 30, 2026 by Jay Rocco for FullStack Alpha. Picks are reviewed monthly. Prices were checked on vendor sites in September 2026 and change often, so confirm before you pay.

Tool	What is free	Where free ends
Composer by SoFi	Starter plan	Advanced $10/mo; Pro $40/mo
Surmount	Free plan	Core $5/mo and up
SignalStack	5 live signals a month; unlimited paper signals	Basic $27/mo for 50 signals
QuantConnect	Unlimited backtesting	Live trading needs paid compute; Researcher $8/mo billed yearly
Alpaca	API, paper trading, IEX real time data	Full market data $99/mo
Option Alpha	Full platform with a funded partner account; paper trading	$99/mo billed yearly without a partner account
Tradetron	10 private strategies, 1 paper deployment	Paid plans from ₹300/mo
TradingView	Charts, Strategy Tester, paper trading	Webhook alerts need Essential, $14.95/mo
NinjaTrader	Charting, backtesting, unlimited simulation	Paid licenses $99/mo or $1,499 lifetime
OpenBB	Open source research platform	Premium data feeds you add yourself

Composer by SoFi

Build and backtest strategies with no code on the free Starter plan. Upgrade only when a feature you need sits behind Advanced or Pro.

Read next: Backtesting Websites: 7 That Test a Strategy Without Code

Surmount

Follow automated strategies through E*TRADE, Alpaca or TradeStation on the free plan. The $5 Core tier is the cheapest paid automation we track.

Read next: AI Trading Bot Free Tiers: The 8 Caps Nobody Lists

SignalStack

Enough to wire one TradingView alert to a broker and prove the plumbing works. Unlimited paper signals mean you can test the full setup before a single live order.

Read next: Pine Script Strategy: Turn an Indicator Into a Backtest That Trades

QuantConnect

The free tier runs the same engine as the paid plans, so research costs nothing. Live deployment is where the bill starts.

Read next: QuantConnect: What LEAN Runs That Your Laptop Cannot

Alpaca

A complete free foundation for a coded bot. The first paid upgrade most bots need is full market data, once IEX quotes are not enough.

Read next: Alpaca API for Beginners: Keys, Paper Trading, and Your First Order

Option Alpha

The best free deal in options automation if you already trade at a partner broker. Bots, backtests and paper trading all included.

Read next: Free Option Backtesting: 5 Tools That Cost $0 to Start

Tradetron

A no code strategy builder with a marketplace. Priced in rupees and most popular with traders who use Indian brokers such as Zerodha.

Read next: AI Trading Bot Free Tiers: The 8 Caps Nobody Lists

TradingView

Everything you need to design and test a chart strategy is free. Webhook alerts, the piece that connects TradingView to a bot, start on Essential.

Read next: Pine Script Tutorial: Write Your First TradingView Indicator Tonight

NinjaTrader

The strongest free option for futures traders who want to practice automation on a desktop platform.

Read next: Best Backtesting Software for Futures: 7 Tested Picks

OpenBB

Free and open source, for pulling market data into your own bot or research notebook before you pay for a data feed.

Read next: OpenBB: 3 Reasons Traders Drop Their Paid Terminal

Four kinds of “free”

1. Free tier. A real product with limits: fewer strategies, delayed data, or one connected broker.
2. Free trial. The full product for a few days or weeks. Mark the cancel date before you start.
3. Open source. Frameworks like LEAN, backtesting.py, and Backtrader cost nothing to download and a lot of hours to run well. Freqtrade, the well known open source crypto bot, is a useful reference for how these projects are built, even though our focus is stocks.
4. “Free” because you are the product. Bots that earn from your order flow, upsells, or a deposit they hold. Be careful here.

What we check in every free AI trading bot

• What the free tier really includes, and the first feature that forces an upgrade.
• Data speed. Delayed quotes can turn a good strategy into a bad one.
• Paper trading. Free paper trading is the single most useful free feature in this market.
• Broker support on the free plan versus paid.
• How it makes money if you never pay.

The smartest free starting point

Before you spend anything, run a strategy on a free paper trading account. Most major brokers offer one, including Interactive Brokers, Alpaca, and Webull. See Paper Trading.

If you can code, the free route goes much further. Open source frameworks and a broker API give you a complete bot for $0 in software. Start with Build a Trading Bot and Claude Trading Bots.

What $0 really gets you

Real trader pain points, answered

Real comments from Trustpilot and the App Store, quoted as posted. Each one gets a straight answer from FullStack Alpha and a link to the guide that fixes it.

From the FullStack Alpha blog

Related guides on this site, written and edited by Jay Rocco:

• AI Trading Bot Free Tiers: The 8 Caps Nobody Lists
• Free Paper Trading Simulator: 7 Apps That Charge Nothing
• Best Free Backtesting Software for Stock Traders in 2026
• Free Option Backtesting: 5 Tools That Cost $0 to Start
• OpenBB: 3 Reasons Traders Drop Their Paid Terminal

Our take

Free is a price, not a gift. Somebody pays for the servers, the data, and the engineers, and if it is not you with a subscription, it is you in some other way: slower data, fewer features, an upsell, or a company holding your deposit. None of that makes free bad. It makes free something to understand before you rely on it. The smartest free move is still a paper trading account.

Quick answers

How do you make a free AI trading bot?

Use a free paper trading account, a free broker API such as Alpaca’s, and an open source Python framework like backtesting.py or LEAN. An AI coding assistant can help write the code. Your real costs become time, hosting, and any market data upgrades.

Which AI trading bot is best and free?

The best free option is usually a free tier or trial from a bot that supports your broker, or an open source framework if you can code. Check what the free plan leaves out, such as real time data or live trading, before you build a routine around it.

Do free trading bots have hidden fees?

Often, yes. Common hidden costs are paid market data, features locked behind upgrades, trading costs on every order, and in some cases wider spreads or payment for order flow. Read the pricing page and the broker’s fee schedule before you connect a free bot.

Related reading

• New to all of this: AI Trading for Beginners
• Paid options, scored: AI Trading Bot Reviews
• Too good to be true: AI Trading Bot Scams

Want free AI stock tools beyond bots? The FullStack Alpha directory at aistockpickerapps.com includes free screeners and calculators you can use now.

Tested by Jay Rocco, Founder and Editor of FullStack Alpha. Free tiers change often, so each review shows the month it was checked. Educational content only, not financial advice.

Stay alpha.