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GitLab: Increased error rate for GitLab Duo Classic

Affected components: GitLab Duo

Timeline of updates

1. investigating2025-12-22 15:38 UTC

   We are seeing increased errors for Duo Classic. Users are experiencing Error Code: A1004. For full details, see https://gitlab.com/gitlab-com/gl-infra/production/-/issues/21032

2. investigating2025-12-22 16:01 UTC

   We are seeing improvements in the error rate and are continuing investigations. For full details, see https://gitlab.com/gitlab-com/gl-infra/production/-/issues/21032

3. monitoring2025-12-22 16:29 UTC

   We are seeing further improvement and are continuing investigations. As a possible workaround, switching to a different model can be used. Full details in https://gitlab.com/gitlab-com/gl-infra/production/-/issues/21032

4. resolved2025-12-22 17:32 UTC

   We've completed our monitoring period and can confirm Duo Chat is back to operating normally. We appreciate your patience during this time. Full details in https://gitlab.com/gitlab-com/gl-infra/production/-/issues/21032

Rewindex changes for this incident

• Major incident: Increased error rate for GitLab Duo Classic 2025-12-22 15:38 UTC

Impact, status and times are the vendor’s own, as last archived. View on status.gitlab.com (opens in new tab). GitLab profile · Recent GitLab incidents · Markdown · JSON