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Composer

Composer lets users create, backtest, and automatically trade rule-based investment strategies with AI and a no-code editor.

Composer

Composer is an automated investing and brokerage platform. Users can describe strategy ideas in plain English, build or edit rule-based strategies called symphonies, backtest them, and automate trading and rebalancing.

It is used by individual investors, strategy builders, and business entities. Starter includes one automated strategy at no subscription cost; Advanced, Pro, and business features cost extra. Composer does not provide investment advice, and investments can lose value.

Features

  • Create trading strategies from natural-language prompts with Trade with AI
  • Build and edit strategies with a no-code visual editor
  • Backtest strategies and compare them with benchmarks
  • Automate trading and portfolio rebalancing
  • Apply weights, conditionals, filters, and dynamic asset selection
  • Share, publish, remix, and invest in community strategies
  • Use full API access for data, backtests, and strategy trading on Pro
  • Trade through brokerage accounts including traditional and Roth IRAs

Use cases

  • Describe an investment idea and turn it into a backtested strategy
  • Build a diversified portfolio without writing code
  • Automate recurring trades and portfolio rebalancing
  • Compare a strategy's historical results with market benchmarks
  • Discover and remix strategies created by other investors
  • Manage larger collections of automated strategies through the API

Pros

    Cons

      Pricing

      Starting price
      $10/mo.
      Pricing checked
      2026-09-19

      Starter

      $0

      • Automate your first strategy
      • Invest in strategies up to 200 nodes
      • Use Trade with AI to discover and evaluate strategy ideas
      • Build and backtest unlimited strategies with the no-code editor

      Advanced

      $10/mo.

      • Automate up to 5 strategies
      • Invest in strategies up to 350 nodes
      • Get more Trade with AI usage every week
      • Diversify across multiple automated strategies

      Pro

      $32/mo.$384/yr

      • Automate up to 500 strategies
      • Invest in strategies up to 10,000 nodes
      • Get the most Trade with AI usage of any plan
      • Get full API access
      • Unlock manual trade overrides
      • Priority customer support

      Business

      For business entities

      • Supercharged strategy building
      • Mark-to-market accounting
      • Build portfolios across markets
      • Invest in strategies up to 15,000 nodes
      • Full IP ownership of strategies
      • API access included
      Official website