Original published: 10/10/2026

Windows版CodexがMXCに対応、セットアップを高速化 ——ChatGPTの全プランでオートレビューを無料化、Pro向けにメッセージ予測機能をベータ提供

AI summary

OpenAI announced the development of a new sandbox mode for Windows Codex using Microsoft Execution Containers (MXC) to accelerate setup.

Key points

•On October 9, 2026, OpenAI announced the new feature via its official X account, OpenAI Developers.
•A sandbox mode utilizing Microsoft Execution Containers (MXC) was introduced for Codex on Windows.
•This change is reported to speed up Codex setup in Windows environments.

OpenAI announced that it optimized how state data is saved to disk in the ChatGPT and Codex desktop apps, reducing storage capacity by 60%.

OpenAI reset usage limits for ChatGPT and Codex on October 15, marking the third such reset in three days.

The always-on personal AI agent "dots" is now available on smartphones, with enhanced integration with Codex.

An OpenAI official announced that a second usage limit reset for ChatGPT and Codex within three days will be implemented by October 13.

OpenAIはEUのAI法に準拠するため、ChatGPTおよびCodexのテキスト出力にウォーターマークを導入する方針を明らかにした