How IBM’s Bob uses "Review Mode" to solve the hardest coding tasks (Full Breakdown)

IBM's Bob is a new AI-powered IDE featuring an agentic workflow with distinct modes (ask, code, plan, review) built on IBM's Granite models. A hands-on demo shows Bob modernizing a legacy COBOL ATM banking app into a Python/Streamlit web app in ~3 minutes. The standout 'Review Mode' runs a security audit via a /review command, surfacing issues like hardcoded secrets, injection risks, and race conditions in a dedicated findings panel. Bob can auto-fix issues and generate unit tests for each fix. It also successfully identified 8 bugs in the original COBOL codebase. Pricing uses a 'Bob coins' system where 1 coin = $0.50 USD, with a free trial offering 40 coins.