Codex cloud adds GitLab support in beta for issues and merge request reviews

Archive entry: this covers an event from August 19, 2026, and we published it on November 8, 2026. The details come from sources dated at the time and may have changed since.

On August 19, 2026, OpenAI added beta GitLab support to Codex cloud on all ChatGPT plans, as the ChatGPT and Codex changelog records. Teams could connect GitLab projects, hand issues and merge requests to Codex with @codex mentions, and ask for merge request reviews, either once or automatically.

What the GitLab support covered

• Users could connect a GitLab project to Codex cloud and create an environment for it.
• Tasks could be started from GitLab issues or merge requests by mentioning @codex.
• Users could request one-off or automatic merge request reviews.
• A managed workspace admin could disable the connector.
• For GitLab Self-Managed or GitLab Dedicated, a workspace admin had to configure the connection, and webhook activity required GitLab 19.0 or later.
• Codex could not complete a review when GitLab omitted a collapsed or oversize diff.

What it meant for GitLab teams

Teams on GitLab, not only GitHub, could hand issues and code review to Codex. A task could start from an issue or a merge request with a single @codex mention, and reviews could be requested once or run automatically, so a team could choose between on-demand and routine checks. The beta stage came with limits: a collapsed or oversize diff that GitLab omitted stopped Codex from completing a review, and self-managed installations needed an administrator to configure the connection.

Sources

• ChatGPT & Codex changelog: GitLab support in Codex cloud (Beta) (OpenAI, August 19, 2026, official)

Written with AI assistance, strictly from the sources listed above. Before it went live, automated checks verified its dates, sources and every language edition.