QuantConnect
Research, backtest, and trade your investments on the world's leading algorithmic trading platform.
Founded
2011
Starting Price
$0
Category
Developer Tools
Last updated June 14, 2026
About QuantConnect
QuantConnect is a cloud-based algorithmic trading platform that gives quants, developers, and institutional traders a unified API for research, backtesting, and live trading. Built on the open-source LEAN engine, it provides terabytes of equity, options, futures, forex, and crypto data, plus 40+ alternative datasets, with one-click deployment to 20+ brokerages. Strategies can run in the cloud or on-premises using Python or C#.
Pros & Cons
Pros
- Free plan includes unlimited backtesting across all major asset classes
- Massive curated data library (since 1998 for US equities) plus 40+ alternative data vendors with point-in-time delivery
- Open-source LEAN engine means you can run strategies locally or on-premises without lock-in
- Connects to 20+ brokerages for paper and live trading from a single API
- Users retain full IP ownership with AES-256 encryption and 2FA available
Key Features
Cloud Research Notebooks
Jupyter-style research terminals attached to terabytes of financial, fundamental, and alternative data, with popular ML and feature-selection libraries preinstalled.
Unlimited Backtesting
Event-driven backtesting across equities, options, futures, forex, and crypto with realistic portfolio, margin, and corporate-action modeling, available even on the free plan.
LEAN Open-Source Engine
The core open-source, event-driven trading engine that powers both cloud and local deployments, contributed to by 180+ engineers worldwide.
Live Trading & Deployment
Deploy strategies to 20+ supported brokerages including Interactive Brokers, Charles Schwab, TradeStation, Alpaca, Binance, Kraken, and Coinbase.
Multi-Asset Data Library
US equities and ETFs since 1998, equity and index options, futures, forex, CFDs, and thousands of crypto pairs from tick to daily resolution.
Alternative Data
40+ alternative data vendors delivered point-in-time and auto-linked to underlying securities via FIGI, CUSIP, and ISIN to avoid look-ahead bias.
Pricing
Free Plan
$0/month
- Equities, indexes, forex, crypto, futures, options data
- Unlimited backtesting
- Community support
- 1 user
Quant Researcher
$84
Best For
Systematic Strategy Development
Quants and developers research, backtest, and refine algorithmic trading strategies against decades of multi-asset historical data.
Automated Live Trading
Deploy proven strategies to live or paper accounts at supported brokerages with co-located execution and real-time data.
Quant Research & Machine Learning
Use cloud research notebooks with ML libraries and alternative data to build and validate factor and ML-driven signals.
Institutional & Firm Infrastructure
Trading firms and institutions run the platform with team collaboration, permissions, and an on-premises option instead of building in-house.
