Best platforms to build an automated trading bot in 2026 (no code required)
A trading bot can trade while you sleep; whether it makes money depends on the rule you gave it. What the platform changes is how cheaply you can test that rule and how fast you can stop it. On both counts, Composer is the best place for most people to start: backtest, paper trade and automate a stocks or ETF strategy with no code, for $0. The rest covers bots inside your brokerage, crypto agents, the coded route and market making.
Key takeaways
- Backtest first, paper second, live third. Every platform here offers at least a paper mode; the ones that make you skip it to get to the demo are not on the list.
- The real cost is rarely the subscription. Slippage, regulatory fees on sales, exchange fees and data plans add up faster than $10 or $40 a month. Composer shows slippage and fees per strategy; Alpaca's $99 data plan is the hidden line item on the coded route.
- A bot that cannot be stopped from your phone is not finished. Look for a kill switch, a cash override and an approval step before anything executes. Composer Pro, Public Agents and Tread all have one.
- Stocks and crypto are different worlds. Composer and Public are stocks and ETFs; Tread, Hummingbot and 3Commas are crypto. Alpaca covers both through code.
- Market making is not a 'set it and forget it' strategy. It is a business of earning the spread while carrying inventory risk, and the free, open-source tool for it (Hummingbot) is free because the hard part is not the software.
New shortlists go to subscribers first. Get the next one by email →
What an automated trading bot actually is (and what it is not)
An automated trading bot is a rule that runs without you. The rule can be as simple as 'buy $200 of SPY every Monday' or as involved as 'if the 10-day RSI on QQQ is above 80, rotate to bonds; otherwise hold tech', and the platform's job is to evaluate it on a schedule, place the orders and report what happened. The newer platforms let you write that rule in English and have an AI turn it into logic; the older ones give you a visual builder or an API.
There are three distinct products hiding under the one name. Strategy platforms (Composer, Public Agents, Catalyst) run a portfolio rule on a schedule. Execution agents (Tread) take a specific order and work it well, slicing a large buy over time or holding a spread. Bot frameworks (Hummingbot, 3Commas, anything on Alpaca) give you the machinery and leave the strategy to you.
What none of them are: a source of returns. A bot removes the emotion and the clicking from a rule; it does not make the rule good. The backtest tells you how the rule would have done, with all the usual caveats about the past. The paper account tells you whether the platform does what you think it does. Only live trading tells you whether the rule survives contact with real fills and real fees, and that is the part you should start small on.
How we ranked these platforms
Five criteria, all of which you can verify on the vendor's own documentation. We did not rank on advertised returns, leaderboards or community size.
- Test before you trade. Is there a backtester, a paper or demo mode, or both, and is it available on the free tier?
- Safety rails. An approval step before execution, a kill switch or go-to-cash override, account whitelisting, and whether the bot can run silently forever.
- All-in cost. Subscription price plus the fees the platform discloses: commissions, slippage, builder or venue fees, regulatory fees and data plans.
- Markets covered. Stocks, ETFs, options, crypto spot, crypto perps, and which brokers or exchanges connect.
- Code required. None, a little, or a working knowledge of Python. Where an AI can write the code for you, we say so.
The best automated trading bot platforms in 2026
Seven platforms, in order. Each entry says what it is best for, what it costs all-in, what happens when the bot is wrong and who should skip it. Two of them have step-by-step guides on this site, linked at the end of the entry.
1. Composer, best for most people: backtest, paper and automate a stocks or ETF strategy with no code
- Price
- Starter $0; Advanced $10/mo; Pro $32/mo yearly ($384/yr) or $40 monthly
- Markets
- US stocks and ETFs
- Test first
- Unlimited backtests, paper trading, all plans
- Safety rails
- Skip Trading and Go to Cash overrides (Pro)
Composer (now 'Composer by SoFi') is a broker and a no-code strategy builder in one. You describe a strategy in English or assemble it from blocks, backtest it against history, paper trade it and then switch it live in the same account. Every strategy page shows out-of-sample start date, regulatory fees and total slippage, which is more honesty about cost than most of the industry manages.
The Starter plan is $0 and lets you automate one strategy of up to 200 nodes, backtest without limit and use the Trade with AI feature. Advanced is $10 a month for five strategies. Pro is $384 a year ($32 a month billed yearly, or $40 monthly) for up to 500 strategies, full API access, priority trade timing near the close and, importantly, manual overrides: Skip Trading and Go to Cash. FINRA and SEC regulatory fees apply on sales.
It is US stocks and ETFs only, trades on a daily rebalance rather than intraday, and the Go to Cash override lives on the Pro plan. For a first bot, none of that matters; our Composer guide takes a one-line idea to a paper-traded strategy in about 30 minutes.
Best suited for: Anyone building their first bot on stocks or ETFs, and anyone who wants the backtest and the live account in one place. Skip it if you trade crypto or need intraday execution.
Composer website →Guide: Build and backtest a strategy in Composer before going live →On our Startups page →
2. Public Agents, best for running the bot inside the brokerage account you already have
- Price
- Feature of a Public brokerage account; no separate price listed
- Markets
- US stocks, ETFs, options, crypto on Public
- Test first
- No backtester; build alert-only first
- Safety rails
- Review and approve every workflow before it runs
Public started rolling out Agents on March 31, 2026, calling itself the first brokerage to offer them. An Agent is a plain-English workflow that watches a condition and acts on it: 'Monitor SPY every 15 minutes. If it drops more than 2% from the open, send me an alert and buy $2,000.' Agents can read real-time prices, the VIX, earnings dates and your own portfolio, and can run options strategies such as covered calls. There is also a marketplace of ready-made Agents to copy and edit.
The safety model is the right one: the Agent drafts the full workflow, asks about anything it is unsure of (strike, expiry), and nothing executes until you have reviewed and approved it. Public's Agents page does not list a separate price; Agents are a feature of a Public brokerage account, so check the current plan requirements before you count on it being free.
What it lacks compared with Composer is a backtester. You can paper the logic by building an alert-only version first, which is exactly what our Prompt #001 does, but you cannot run the rule against ten years of history before switching it on. Public also offers an MCP connection so Claude or ChatGPT can trade through your account, which belongs in a separate article.
Best suited for: Public customers who want alerts and conditional orders without moving money to another platform. Skip it if you need a backtest before you trust a rule.
Public Agents website →Prompt #001: Let the watchlist come to you →
3. Tread, best for crypto execution agents across exchanges, including a market maker
- Price
- No volume fees on CEXs; 2.5 to 1 bps builder fee on listed perp DEXs
- Markets
- Crypto spot and perps on connected exchanges
- Test first
- Agent shows the plan before executing
- Safety rails
- Whitelisted accounts only; existing risk limits enforced; agents in beta
Tread is an order and execution management system for digital assets that connects to your existing exchange accounts (Binance, Bybit, OKX, Coinbase International, Deribit, Hyperliquid and others) through API keys. Its Agents feature, in beta, is a chat workspace where you hire a specialist: the Desk Trader works orders ('buy $500 of BTC over the next 4 hours in equal slices, max slippage 0.3%') and the Market Maker runs a market making bot on an account you choose.
The permission model is the strictest on this list. Agents can only trade accounts you have explicitly whitelisted, cannot move funds off the platform, cannot override your existing risk limits and, in Tread's words, cannot 'run forever silently'. On cost, there are no volume-based fees on centralised exchanges; on a list of perpetual DEXs (Hyperliquid, Pacifica and others) a builder fee applies, 2.5 basis points for under $1 million of 14-day volume, falling to 1 basis point above $100 million, with discounts for holding the TREAD token.
It is a professional tool and it looks like one; the first ten minutes are spent on API keys and whitelisting rather than on a strategy. The payoff is that the agent is working real orders on your real venue with your own limits in force. Our Tread guide builds a Bitcoin agent with a trigger, a take-profit and a stop-loss in one prompt.
Best suited for: Crypto traders with existing exchange accounts who want execution done properly, and anyone curious about market making with guardrails. Skip it if you trade stocks.
Tread website →Guide: Build a Bitcoin trading agent in Tread →Prompt #002: A Desk Trader brief with a size, a time, a limit and a stop →On our Startups page →
4. Alpaca, best if you can code, or are willing to let an AI write the code
- Price
- Commission-free trading; data Basic free or Algo Trader Plus $99/mo
- Markets
- US stocks, ETFs, options, crypto
- Test first
- Free paper trading with real-time IEX data
- Safety rails
- None built in; you write them
Alpaca is a broker built for programs. US stocks, ETFs, options and crypto trade commission-free through a REST API with official SDKs in Python, .NET, Go and Node, and the paper trading environment is free for everyone with real-time IEX data. This is the route most 'I built a trading bot' posts are describing, and in 2026 the code is usually written by Claude or ChatGPT from a prompt and pasted into a small script that runs on a schedule.
The cost that gets missed is data. The Basic market data plan is free but IEX-only, with 30 websocket symbols and 15-minute-delayed REST quotes. Algo Trader Plus is $99 a month for full SIP coverage of all US exchanges, OPRA options data and unlimited subscriptions. If your strategy is sensitive to the exact print, budget for it; if it rebalances daily, Basic is fine.
The freedom is total and so is the responsibility: there is no approval step, no go-to-cash button and no one to stop the script except you. Start on paper, add your own kill switch (a file the script checks before each run is enough) and keep the live account small until the bot has been boring for a month.
Best suited for: Traders who can read Python, or who trust an AI to write it and themselves to review it. Skip it if you want a product rather than a project.
5. Hummingbot, best for market making, if you understand what you are signing up for
- Price
- Free, open source (Apache 2.0); you pay exchange fees and hosting
- Markets
- Crypto spot and perps, 50+ exchanges
- Test first
- Paper trade mode
- Safety rails
- Inventory and kill-switch settings you configure
Hummingbot is the open-source standard for retail crypto market making and arbitrage: a Python framework under the Apache 2.0 licence, free to run, with connectors to 50+ centralised and decentralised exchanges and, as of July 2026, 19,300+ GitHub stars. You install it on your own machine or server, point it at an exchange account and run a strategy such as pure market making, which quotes a bid and an ask around mid-price and earns the spread when both sides fill.
That last sentence is where the money is made and lost. When price trends, one side fills repeatedly and you accumulate inventory on the wrong side; exchange fees eat thin spreads; and faster participants pick off stale quotes. The software is free because the edge is in parameters, venue choice and fee tier, none of which comes in the box. Hummingbot is honest about this: the FAQ describes it as client software, not a strategy.
There is no hosted version and no approval step; it is a terminal application with config files. Run it in paper mode on a volatile pair for a week, watch the inventory drift, and you will learn more about market making than from any article, including this one.
Best suited for: Technically comfortable crypto traders who want to learn market making with real tools. Skip it if 'edit a YAML file' is not something you want to do on a Sunday.
6. 3Commas, best for DCA and grid bots on crypto exchanges, with a demo account on every plan
- Price
- Starter $20/mo; Pro $50/mo; Expert $140/mo (annual $15, $38, $105)
- Markets
- Crypto spot and futures, 9 exchanges
- Test first
- Demo account on all plans
- Safety rails
- Stop-loss, trailing and breakeven settings per bot
3Commas is the long-running hosted bot platform for crypto exchange accounts. The bots are templates rather than free-form strategies: DCA bots that average into a position and take profit on a ladder, grid bots that buy and sell inside a range, and signal bots that act on TradingView or webhook alerts. It connects to nine exchanges and every plan includes a demo account for paper trading.
List prices are $20 a month for Starter (spot only, one API key, five DCA bots), $50 for Pro (spot and futures, five keys, 20 DCA bots) and $140 for Expert (25 keys, 1,000 bots, developer API), with annual billing shown at $15, $38 and $105. The pricing page runs frequent promotions, so treat those as the ceiling. A new QuantPilot feature has an AI build and test strategies end-to-end.
It ranks here rather than higher because the templates are good at what they do and hard to push beyond, and because grid and DCA bots have a specific failure mode: they look great in a range and bleed in a trend. The demo account exists for exactly that reason; use it through at least one sharp move before going live.
Best suited for: Crypto traders who want a grid or DCA bot running today without touching code. Skip it if your strategy does not fit a template.
7. Catalyst, one to watch: natural-language strategies with a $30 million Sequoia-led seed round
- Price
- Not published
- Markets
- Stocks, tokens, prediction markets, yield, commodities (stated)
- Test first
- Not yet documented
- Safety rails
- Trades only after you approve (stated)
Catalyst, founded in 2025, closed a $30 million seed round led by Sequoia Capital on October 8, 2026, to build AI trading agents for retail investors. The pitch: state an objective or belief in plain language, and agents identify the data feeds and venues, build a live strategy across stocks, tokens, prediction markets, yield and commodities, and trade it, but only after you approve.
We include it last because the product is new and the pricing is not public, so it fails two of our five criteria for now. It makes the list because the design choices visible so far (approval before execution, multi-asset from day one, deposits in fiat or crypto) are the right ones, and because a seed round of that size from that investor means it will be in front of a lot of traders within the year.
Treat it as a watchlist entry. We will move it up or off this page when there is a published fee schedule and a paper mode to test.
Best suited for: Early adopters who want to try a natural-language strategy builder and are fine with a product that is still forming. Skip it for now if you need a fee schedule before you deposit.
Side-by-side comparison
Prices are list prices from each vendor's pricing page or documentation on the updated date. 'Test first' is what you can do before real money is at risk.
| Platform | Best for | Markets | Price | Test first | Safety rails | Code |
|---|---|---|---|---|---|---|
| Composer | First bot on stocks/ETFs | US stocks, ETFs | $0 / $10 / $32–40 mo | Backtest + paper | Go to Cash (Pro) | None |
| Public Agents | Bot inside your brokerage | Stocks, ETFs, options, crypto | Brokerage feature | Alert-only first | Approve before run | None |
| Tread | Crypto execution, market maker | Crypto spot, perps | No CEX fees; 1–2.5 bps on perp DEXs | Plan shown first | Whitelisting, risk limits | None |
| Alpaca | Coded bots | Stocks, ETFs, options, crypto | $0 commissions; data $0 or $99 mo | Free paper | Your own | Python etc. |
| Hummingbot | Market making | Crypto, 50+ exchanges | Free, open source | Paper mode | Configured by you | Config + some Python |
| 3Commas | DCA and grid bots | Crypto, 9 exchanges | $20 / $50 / $140 mo | Demo account | Per-bot stops | None |
| Catalyst | One to watch | Multi-asset (stated) | Not published | Not documented | Approve before run | None |
Which platform fits your situation
| If you are | Start with | Add later | Why |
|---|---|---|---|
| New to bots, trading stocks or ETFs | Composer Starter | Composer Pro for Go to Cash | Backtest and paper in the same place as the live account, for $0. |
| Already a Public customer | Public Agents, alert-only | Conditional orders once the alerts prove the logic | No money moves; approval step on every workflow. |
| A crypto trader with exchange accounts | Tread Desk Trader | Tread Market Maker on a small whitelisted account | Real execution on your venue with your own limits in force. |
| Comfortable in Python, or with an AI writing it | Alpaca paper account | Algo Trader Plus when the strategy needs exact prints | Total control, zero commissions, free paper. |
| Curious about market making | Hummingbot paper mode | A small live account on a low-fee venue | The real tool, and the lesson in inventory risk comes free. |
| Want a grid or DCA bot today | 3Commas demo account | Starter plan on one exchange | Templates that work, tested through a trend first. |
What building one looks like
Our two guides below are the first and third entries on this list, start to finish. The Composer guide takes a one-line idea to a backtested, paper-traded strategy with the exit rule and the drawdown number in front of you before any money moves. The Tread guide, with video, builds a Bitcoin agent whose prompt carries a trigger price, a take-profit and a stop-loss, and ends with the checklist to run before you let it trade.
Both end the same way: with the bot in paper or at small size, and you checking the P&L rather than the chart. That is the realistic version of 'while you sleep'.
Frequently asked questions
- Can a trading bot really make money while you sleep?
- It can trade while you sleep. Whether it makes money depends on the rule, the fees and the market regime, none of which the platform controls. Backtest the rule, paper trade it, then go live small; a bot that was never profitable on paper will not become profitable live.
- What is the best free trading bot platform?
- Composer's Starter plan for stocks and ETFs: unlimited backtests, paper trading and one live automated strategy for $0. For crypto, Hummingbot is free and open source but requires you to run it yourself; 3Commas includes a demo account on every plan.
- How much does it cost to run an automated trading bot?
- Between $0 and about $140 a month in subscriptions, plus trading costs the subscription does not cover: slippage, regulatory fees on sales, exchange fees and, on the coded route, a data plan such as Alpaca's $99 a month Algo Trader Plus.
- Do I need to know how to code to build a trading bot?
- No. Composer, Public Agents, Tread, 3Commas and Catalyst all work from plain English or a visual builder. Alpaca needs code, which an AI can write for you; Hummingbot needs configuration files and some comfort with Python.
- What is a market making bot and can a retail trader run one?
- A market making bot quotes a bid and an ask around the current price and earns the spread when both sides fill, while carrying the risk of accumulating inventory when price trends. Retail traders can run one with Hummingbot (free, self-hosted) or Tread's Market Maker agent; whether it is profitable depends on fees, venue and parameters.
- How do I stop a trading bot that is losing money?
- Know the answer before you switch it on. Composer Pro has Skip Trading and Go to Cash buttons; Tread agents only trade whitelisted accounts within your risk limits; 3Commas bots have per-bot stop-losses; on Alpaca you write the kill switch yourself. Never run a bot without a stop you have tested.
- Are AI trading bots safe to connect to my exchange or broker account?
- Use API keys with trading permission only, never withdrawal permission; whitelist specific accounts where the platform allows it (Tread does); and start with a sub-account or a small balance. The platform's safety model matters as much as its strategy builder.
- Which is better for a beginner, a stock bot or a crypto bot?
- A stock or ETF bot on Composer, because it rebalances daily, the backtest is built in and the fees are visible. Crypto bots run 24/7 on more volatile markets with exchange fees that vary by venue, which is a harder first lesson.
Get the next shortlist first
Hands Off is a free newsletter on AI tools for traders and finance professionals, twice a week. Every Friday the Agent Board posts how our house agents did against SPY and BTC, wins and losses the same way. New guides and reviews go to subscribers first.
Prices and plan details are taken from each vendor's own pages on the updated date and change without notice. This is an editorial shortlist, not a tested configuration and not financial advice. We have no paid relationship with any tool on this page.