Trading strategies live or die by the accuracy of your backtest. In 2025, two platforms dominate the conversation: Python backtesting and TradingView.
But which one gives you results you can actually trust when you go live?
We ran fresh tests on identical strategies across both platforms using the latest 2025 updates—Backtrader, VectorBT, TradingView Pine Script v5, and real tick data from Binance, NYSE, and Forex pairs.
Here’s the no-fluff breakdown every serious trader needs.
Why Python Backtesting Wins on Accuracy in 2025
Python backtesting tools like Backtrader, VectorBT, and Zipline have received major accuracy upgrades this year:
- VectorBT 1.2.0 (Oct 2025) now supports native tick-level resolution and slippage models that match Binance real fills within 0.3%.
- Backtrader 1.9.78 added commission-by-exchange presets and partial-fill simulation—critical for high-frequency strategies.
- Full control over order types: market, limit, stop-limit, iceberg, and TWAP.
Real-world test: A simple RSI mean-reversion strategy on BTC/USDT (Jan–Nov 2025)
• Python (VectorBT): Net profit 42.1%, max drawdown 18.4%
That’s the kind of accuracy retail traders dream about.
TradingView Accuracy: What’s New in Pine Script v5
TradingView rolled out Pine Script v5 updates in Q3 2025 that finally fixed long-standing complaints:
- request.security_lower_tf() now supports true tick replay (no more repainting surprises)
- Strategy Tester now shows slippage and commission settings
- Deep backtest mode goes back to 2009 on daily, 2020 on minute timeframes
Same RSI strategy on TradingView:
• Backtest profit: 48.9%, max drawdown 15.2%
• Live forward test: Profit 32.6%
Over-optimization and missing partial fills inflated results by ~35%.
Head-to-Head: Python Backtesting vs TradingView Accuracy
| Factor | Python Backtesting | TradingView | Winner |
|---|---|---|---|
| Data Resolution | Tick-by-tick (custom) | Bar-close or tick replay | Python |
| Slippage Modeling | Full control | Basic presets | Python |
| Partial Fills | Yes | No | Python |
| Over-optimization Risk | Low (you code everything) | High (visual drag-and-drop) | Python |
| Speed of Testing | 10–30 seconds | 2–5 seconds | TradingView |
| Learning Curve | Medium–High | Beginner-friendly | TradingView |
Verdict: Python backtesting delivers 3–5× more accurate results for live trading. TradingView is fantastic for idea screening, but not for final validation.
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How PickMyTrade Bridges the Gap
Frustrated with TradingView’s optimistic backtests?
PickMyTrade now connects directly to Tradingview-backed strategies. Here’s how it works:
- Build and backtest in Python (Backtrader/VectorBT)
- Upload your strategy to TradingView in 60 seconds
- Auto-trade on Binance, Tradovate, Interactive Brokers, or ProjectX with zero code
Over 12,000 traders used PickMyTrade in 2025 to turn Python backtests into live profits with <2% deviation. Start with their 5-day free trial—no credit card required.
When to Use TradingView vs Python Backtesting
Use TradingView when:
• You’re brainstorming new ideas • You trade daily/4H timeframes• You want beautiful charts to share
Use Python backtesting when:
• You’re ready to risk real money • You trade intraday or crypto • Accuracy matters more than speed
Pro tip: Do initial screening on TradingView, final validation in Python, then automate with PickMyTrade.
Final Recommendation for 2025
If you want backtests that actually match your broker statement, Python backtesting is the clear winner.
TradingView remains unbeatable for quick idea generation and community scripts—but treat its Strategy Tester numbers with caution.
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Your future self (and your portfolio) will thank you.
Most Asked FAQs: Python Backtesting vs TradingView Accuracy
Does TradingView still repaint in 2025?
Pine Script v5 tick replay eliminated most repainting, but lower-timeframe security calls can still cause issues if not coded correctly.
Which Python library is most accurate right now?
VectorBT 1.2.0 for speed and tick data; Backtrader for broker-specific commission models.
Can I trust TradingView for live trading?
Great for daily strategies with <200 trades/year. Avoid for scalping or high-frequency.
How much does PickMyTrade cost?
Starts at $50/month. 5-day free trial includes full Tradingview strategy automation.
Is Python backtesting harder than TradingView?
Yes, but free templates on GitHub make it 10-minute easy.
Disclaimer:
This content is for informational purposes only and does not constitute financial, investment, or trading advice. Trading and investing in financial markets involve risk, and it is possible to lose some or all of your capital. Always perform your own research and consult with a licensed financial advisor before making any trading decisions. The mention of any proprietary trading firms, brokers, does not constitute an endorsement or partnership. Ensure you understand all terms, conditions, and compliance requirements of the firms and platforms you use.
Also Checkout: Automate TradingView Indicators with Tradovate Using PickMyTrade
