Codex's July 13 changelog added inline visualizations in tasks and smoother task creation from conversations, alongside a multi-agent beta that lets GPT-5.6 spawn concurrent subagents and synthesize their work in a single request. It operationalizes the 'orchestrate agents, don't hand-code' pattern directly inside the Codex/ChatGPT Work surface. For builders already running homegrown subagent fans-outs, it's worth benchmarking against a first-party orchestration primitive.