Python in Excel 3: Advanced Financial Modeling with LLMs and CoPilot

Reactive Publishing

In Python in Excel 3, Hayden Van Der Post returns with the most advanced guide yet, taking financial modeling into the age of AI. This isn’t just another Excel book, this is the future of finance, where Python, CoPilot, and large language models (LLMs) converge to automate, accelerate, and transform your entire workflow.

What You’ll Learn:

• Seamless Python Integration: Build and execute Python code directly inside Excel using Microsoft’s native Python-in-Excel engine.

• LLM-Augmented Forecasting: Leverage GPT-style AI models to generate assumptions, scenarios, and even write DAX/Excel formulas.

• CoPilot for Finance: Automate complex modeling with natural language, create dashboards in seconds, and scale analysis beyond human limits.

• Real-World Templates: Dynamic cash flow models, valuation frameworks, Monte Carlo simulators, and FP&A dashboards, fully automated.

• Risk, Return & AI: Apply machine learning to model uncertainty, optimize decisions, and explain it all to your boss with clarity and charts.

Who This Is For:

• FP&A professionals, data-savvy CFOs, and financial analysts tired of manual grind

• Quantitative Excel users who want to go beyond VBA

• Startup founders, investment professionals, and anyone who wants to work 5x faster and 10x smarter

Why This Book Matters:

In 2026, your edge is not just technical, it’s augmented.
Let Excel talk to Python. Let CoPilot handle your grunt work. Let LLMs brainstorm your next model.

This book is your operating manual for that new financial reality.