What is Claude Code and how does it differ from ChatGPT for Magento dev?

Claude Code is Anthropic’s official CLI for Claude that runs locally against your real source tree. Unlike chat-window ChatGPT, Claude Code reads your actual vendor/, app/code/, db_schema.xml and DI graph — so suggestions reference your real classes, plugins and observers, not generic Magento snippets. It edits files, runs your tests, and commits PRs end-to-end. For Magento specifically, this means no hallucinated APIs, no fictional ObjectManager calls, and no Magento 1.x advice on a Magento 2.4.x repo.