Latest VS Code update introduces prepackaged bundles of chat customizations that can include skills, commands, agents, MCP servers, and hooks.
The big headlines on this release are efficiency, with OpenAI reporting that GPT-5.4 uses far fewer tokens (47% fewer on some tasks) than its predecessors).
OpenAI today released the Codex app for Windows, powered by OpenAI’s frontier coding models, and it’s now the only coding agent with a first-class Windows experience.