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If you have strategies built on QuantConnect, running on the open-source Lean engine, Ziplime’s AI can help port that logic to its own Python/Zipline-based engine. Because both Lean and Ziplime use Python, migration is often more direct than from a non-Python platform — but the underlying APIs differ (data access, order placement, scheduling), so the agent team will still rewrite strategy internals against Ziplime’s API rather than doing a literal copy-paste.
Compare backtest results before and after migration. Even with similar Python roots, differences in data handling and fill assumptions between Lean and Zipline can shift results.