AI Coding Agents Compared: Claude Code vs ChatGPT Codex in 2026
Claude Code hit $1B ARR in six months. Codex fired back with GPT-5.3 and a desktop app. One thinks like an architect, the other ships like an engineer under deadline. This comparison covers accurate launch timelines, setup, a real code test showing different outputs, a full feature table, honest pricing data, and a clear verdict on which AI coding agent to use and when.