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Claude Opus 4.6 Fast not appearing for some Copilot users

At a glance · GitHub's status

ResolvedLasted 39 min

First posted
on GitHub Enterprise Cloud data residency status
Ended
· marked resolved
Affects
GitHub Enterprise Cloud Australia
Edited
Not since we first saw it
Source
GitHub Enterprise Cloud data residency status · checked 1 min ago

In short

GitHub reported a partial outage affecting GitHub Enterprise Cloud Australia, starting 20:31 UTC on 3 Mar. GitHub marked it resolved at 21:11 UTC after 39 min. GitHub has since published a post-incident report.

GitHub says

GitHub's latest update, , in short excerpts.

On March 3, 2026, between 19:44 UTC and 21:05 UTC, some GitHub Copilot users reported that the Claude Opus 4.6 Fast model was no longer…

GitHub,

Read the full update on GitHub's status page

Timeline

Times in UTC, GitHub's own where it gives them.

  1. 3 Mar

    GitHubFirst public postFrom GitHub's own incident history, before our archive started.

  2. +40 min

    GitHubResolved

What GitHub changed

GitHub adds updates to its incidents. We save every version (checked every minute) and list what changed. Quotes are short excerpts. The full text is on GitHub's page.

One version so far. If GitHub edits it, each change shows here with what was removed and added.

  1. First version we captured ·

    As first seen: postmortem · 1 service
    Status
    postmortem
    Services
    GitHub Enterprise Cloud Australia

    Seen by us · GitHub's timestamp · GitHub's page

Affected services

Official updates

Posted by GitHub Enterprise Cloud data residency status, newest first. The newest are quoted in their first sentence; the full text of each is on GitHub's page.

  1. Post-incident report ·

    On March 3, 2026, between 19:44 UTC and 21:05 UTC, some GitHub Copilot users reported that the Claude Opus 4.6 Fast model was no longer…

  2. Resolved ·

    This incident has been resolved.

  3. Investigating ·

    Copilot is experiencing degraded performance.

  4. Investigating ·

    We believe that all expected users still have access to Claude Opus 4.6.

  5. Investigating ·

    Copilot is experiencing degraded performance.

  6. Investigating ·

    Copilot is experiencing degraded performance.

  7. Investigating ·

    We are investigating reports of degraded performance for Copilot

Read the full update on GitHub's status page

Last updated