OpenAI has announced plans to acquire Pierre Computer Company, Inc. The announcement is dated November 4, 2026. Existing Codex users are already using Pierre's file navigation and change review technology.

The information in this article was checked as of November 5, 2026, against OpenAI's acquisition announcement and pricing documentation.

The planned Pierre acquisition remains subject to closing conditions

OpenAI has announced plans to acquire Pierre. The transaction is subject to customary closing conditions, including regulatory approval. Until closing, the two companies will continue to operate independently.

OpenAI plans to integrate Code Storage into Codex. It intends to keep Pierre's open-source projects public. It also said it would continue contributing to those projects.

The Codex app already uses Pierre’s Trees and Diffs for file navigation and change review.AI-generated image

Codex already uses Trees and Diffs

According to OpenAI, the Codex app already uses Pierre libraries. Trees is used for file navigation. Diffs is used to review code changes.

The existing Codex service is included in ChatGPT plans, including Free and Go. These are the terms for the existing service confirmed in OpenAI's pricing documentation. Terms for using the integrated features resulting from this acquisition have not been announced separately.

Item Status confirmed by official sources What to distinguish when using it
Trees·Diffs Already in use in the Codex app Technology currently in use
Code Storage Customers advised they can continue using it after the acquisition closes Continued use of the existing service
Code Storage integration into Codex OpenAI has announced plans to proceed Availability timeline not disclosed
Pierre open-source projects Plans to keep them public and continue contributing Will remain open source after the acquisition

No date has been specified for when the integrated features will be available in Korea. The acquisition announcement contains no regional availability timelines, including for Korea. The statement that existing Codex is included in certain plans does not establish the detailed terms of use in Korea.

Existing Codex usage limits vary by plan

According to OpenAI's pricing documentation, usage limits for the existing Codex service vary by plan. Its inclusion in Free and Go does not mean usage is unlimited. Check the official pricing documentation for the limits of the plan you intend to use. (Verified figures: estimated GPT-6.1 Sol local messages for Plus·Standard Business, 15~160 per 5 hours · Source: learn.chatgpt.com · Checked 2026-11-05)

Pricing for the Code Storage integration has not been disclosed. Usage limits for the integrated features have not been specified either. Existing Codex plan terms should not be assumed to apply unchanged to the integrated features.

The acquisition price and integration timeline have not been disclosed

OpenAI's announcement does not state the acquisition price or expected closing date. It also gives no timeline for integrating Code Storage into Codex. The following items remain unconfirmed.

  • Acquisition price and expected closing date
  • Timeline for integrating Code Storage into Codex
  • Eligible plans and availability timeline in Korea for the integrated features
  • Pricing, usage limits, and API availability details for the integrated features
  • Announcement time and the time zone used for the announcement date

The date shown on the announcement is November 4, 2026. Without an announcement time and time zone, it cannot be converted to Korean time. The feed detection time does not establish when the company made the announcement.

What to check before using the features in Korea

When considering adoption in Korea, distinguish between current features and planned integrated features. The Pierre technologies currently in use are Trees and Diffs in the Codex app. Availability of the Code Storage integration must be confirmed through subsequent official announcements.

  • To use the existing Codex service, check the limits that apply to your ChatGPT plan.
  • Code Storage customers should distinguish between guidance on continued use and plans for Codex integration.
  • If you need the integrated features, check for announcements about availability in Korea and eligible plans.
  • If you plan to connect through an API, check whether API availability details for the integrated features have been disclosed.