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BacktestLoop
FreemiumAPI
Most backtesting tools hand you either a no-code canvas that hides the math or a blank Python file that assumes you already know backtrader — BacktestLoop sits in the gap, generating editable strategy code from plain-English descriptions and running it against institutional-grade historical data without requiring you to wire up a data pipeline first.
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Screenshots 4
Summary
The workflow is seven steps: describe your strategy, get Python, run the backtest in an isolated cloud environment, stream the logs live, inspect the equity curve and trade-level metrics, run parallel variations, and compare. The code is real Backtrader or VectorBT — not a black box — so you can extend it in a Monaco editor with custom dependencies. The ceiling appears when your strategy logic grows complex enough that AI-generated code needs significant hand-editing; at that point you are maintaining generated code plus your own modifications, which compounds across iterations. Teams that hit this ceiling typically shift to managing the codebase directly and using BacktestLoop's API or MCP connector to stay in the loop from their own editor.
Bottom line: Pick this for validating a plain-English strategy idea against real historical data without building infrastructure; plan a different workflow when your strategy requires deep custom code that outpaces what the AI generator produces cleanly.
Pricing Plans
SubscriptionLast verified 1 day ago- Price
- $0–$199.99/mo
- Free Tier
- 15 starter credits once, basic-plan data depth, full AI strategy builder, every trade/chart/log/metric, no paper trading, no higher concurrency, no GPU acceleration, no credit card required
Free
Free
Try it properly: describe strategies, get AI-generated Python, and run backtests with a useful one-time allowance
- 15 starter credits once
- Basic-plan data depth while credits remain
- Full AI strategy builder & editable Python
- Every trade, chart, log and metric
- Plain-English verdict on result
- No credit card required
Starter
$7.99per month
A light monthly plan for weekend researchers - keep building without the big-plan price
- u2248 500 AI messages or 60 AI-built backtests/mo
- 1 continuously paper-traded strategy
- Smart, hourly, daily or operational alerts
- Full history (5-minute & above)
- 2 years of 1-minute data
- 7 days of 1-second data
- 75 credits per month
- 1 concurrent backtest
- Up to 4 strategy variations per experiment
- API access included
- No GPU acceleration
Basic
$19.99per month
More room for recurring trading strategy backtests and higher-resolution data
- u2248 1,300 AI messages or 150 AI-built backtests/mo
- 2 continuously paper-traded strategies
- Smart, hourly, daily or operational alerts
- Full history (5-minute & above)
- 2 years of 1-minute data
- 7 days of 1-second data
- 200 credits per month
- 2 concurrent backtests
- Up to 8 strategy variations per experiment
- GPU acceleration: T4 & L4
- API access included
Pro
$49.99per month
Scale your trading strategy backtesting with deeper history, larger experiments, and more credits
- u2248 3,300 AI messages or 400 AI-built backtests/mo
- 10 continuously paper-traded strategies
- Signed webhook alerts to own endpoints
- Smart, hourly, daily or operational alerts
- Full history (5-minute & above)
- 5 years of 1-minute data
- 30 days of 1-second data
- 500 credits per month
- 3 concurrent backtests
- Up to 12 strategy variations per experiment
- GPU acceleration: T4, L4, A10G & A100
- API access included
Ultra
$199.99per month
Highest monthly credit pool, priority resources, and expanded capacity for serious quant backtesting
- u2248 13,300 AI messages or 1,700 AI-built backtests/mo
- 25 continuously paper-traded strategies
- Signed webhook alerts to own endpoints
- Full history (5-minute & above)
- Full 1-minute history
- 60 days of 1-second data
- 2000 credits per month
- 5 concurrent backtests
- Up to 20 strategy variations per experiment
- GPU acceleration: T4, L4, A10G, A100 & H100
- Priority support
- API access included
View full pricing on backtestloop.com →
Pricing may have changed since last verified. Check the official site for current plans.
Find your fit
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Pros
- Natural-language-to-Python generation targeting Backtrader or VectorBT, so traders without deep Python experience get a real, inspectable codebase rather than a locked black box they cannot audit or extend.
- 1-second bar resolution across 19 timeframes, so intraday strategies that break on the 1-minute floor most platforms impose can be tested at the granularity the strategy actually requires.
- Parallel variation runs let you experiment across parameter or logic changes simultaneously, so iterating toward a better strategy takes hours rather than sequential days of single runs.
- Isolated, stateless cloud execution means every backtest is reproducible — re-running the same code against the same period returns the same result, which matters when you are comparing strategy versions rather than chasing drift.
- API and MCP connector available, so teams already working in Claude Code, Cursor, or Codex can pipe results back into their existing coding environment instead of context-switching to a separate UI.
- YouTube video ingestion — the vendor states the AI agent watches the actual video, not just a transcript — lets researchers implement and backtest a published strategy without manually transcribing rules.
Cons
- AI-generated code quality degrades as strategy complexity grows: simple moving-average crossovers or basic momentum rules produce clean output, but multi-condition entries with dynamic position sizing and custom indicators produce code that requires material hand-editing before it reflects the actual intent. At that point you are maintaining a hybrid codebase where the generator becomes a liability rather than a shortcut.
- GPU-accelerated compute and 1-second historical data are paid-only features, so the free tier's data depth and compute ceiling will block validation of any intraday strategy that needs sub-minute resolution or a heavy ML model — teams discover this after designing a strategy the free tier cannot run.
- No self-hosted option exists, so teams under data-residency or compliance requirements that prohibit sending strategy logic or trade parameters to a third-party cloud have no path forward and must move to a self-managed backtrader or VectorBT setup running on their own infrastructure.
- The platform is not agentic — it generates code and runs backtests on request, but does not autonomously iterate toward a performance target. Teams expecting the tool to search a strategy space on its own will write that loop themselves or move to a framework that supports autonomous optimization.
About
- Platforms
- Web
- API Available
- Yes
- Self-Hosted
- No
- Last Updated
- July 7, 2026
Best For
Who it's for
- Quantitative traders developing or validating strategies
- Users with limited Python experience who want AI-generated code
- Researchers needing repeatable backtest infrastructure
What it does well
- Generate and iterate on trading strategy code from natural language descriptions
- Run historical backtests across multiple asset classes
- Inspect trade-level logs, equity curves, and risk metrics
- Experiment with strategy variations at scale
Compare BacktestLoop
Frequently Asked Questions
- Is BacktestLoop free?
- BacktestLoop offers a free option alongside paid upgrades. Pricing: $0–$199.99/mo. Check the current allowances and terms before choosing a plan.
- Does BacktestLoop have an API?
- Yes. BacktestLoop exposes a developer API. See the official documentation at https://backtestloop.com for details.
- What platforms does BacktestLoop support?
- BacktestLoop is available on: Web.
People also compared
BacktestLoop takes a natural-language strategy description — entries, exits, filters, risk rules — and produces editable Python targeting either Backtrader (event-driven, with fees, margin, and financing modelled) or VectorBT (vectorized, faster on long intraday histories). The generated code runs in an isolated, stateless cloud environment against historical data sourced from Databento, covering stocks, futures, forex, and crypto down to 1-second bars on supported plans. Logs stream live during execution, and results surface as an equity curve, full trade log, and risk metrics. No local data pipeline, no environment setup.
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