The Quant’s Guide to AI Coding Assistants: Why Copilot + Claude Opus Beat Everything Else in 2026

TL;DR: The best AI coding assistant for finance in 2026 isn t a single tool — it s a two-layer stack. I run GitHub Copilot for the inner loop (inline completions, Visual Studio s .NET firepower, GitHub-native PR approvals) and Claude Opus 4.8 for the outer loop (multi-file reasoning, refactors, debugging the math). Copilot has the better hands... The post The Quant s Guide to AI Coding Assistants:…