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Elevated latency on the Claude API for some users

ResolvedminorOfficial source confirmedSpecific component onlyFirst recorded update Sep 10, 2026, 09:43 PM · Resolved Sep 10, 2026, 11:24 PM

The issue affecting Claude services has been mitigated.

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Affected services

Claude CoworkClaude API (api.anthropic.com)

Updates (2)

  1. Sep 10, 2026, 11:24 PM
    Elevated latency on the Claude API for some users

    The issue affecting Claude services has been mitigated.

    Anthropic ↗
  2. Sep 10, 2026, 09:43 PM
    Elevated latency on the Claude API for some users

    We are experiencing slower than normal response times on the Claude API for some customers whose traffic enters through the US Midwest. Users may experience elevated latency and some request timeouts.

    Anthropic ↗

What to do next

  • Verify your own services recovered cleanly. Some upstream outages leave queues or caches in a degraded state, run smoke tests before declaring green internally.
  • Save the post-mortem. Vendors usually publish a detailed RCA 1-3 days later. We'll add it to this page when it appears.
  • Watch the provider going forward. Follow Anthropic's status feed →

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