Elevated errors on Claude Sonnet 4.6

What to do

• Check whether you use Anthropic claude.ai, Claude Console (platform.claude.com), Claude API (api.anthropic.com), Claude Code and 1 more. Check your stack

  Drop a package.json, lockfile, Terraform or a list of domains at down.guide to see every provider you depend on.

• Confirm your retries, queues and scheduled jobs caught up after the 2h 33m it lasted.

  Anything that failed between 2026-03-16 14:02 UTC and 2026-03-16 16:35 UTC may need a replay.

• Subscribe to Anthropic's feed to hear about the next one first. RSS feed

  https://down.guide/feed?provider=anthropic works in Slack (/feed subscribe), Discord feed bots and any RSS reader.

Updates from Anthropic 7

1. investigatingMar 16, 2026, 2:02 PM UTC

   There's an elevated error rate for free tier users on Claude Sonnet 4.6. We are investigating

   provider

2. identifiedMar 16, 2026, 2:02 PM UTC

   The issue has been identified and a fix is being implemented.

   provider

3. identifiedMar 16, 2026, 2:04 PM UTC

   We are continuing to work on a fix for this issue.

   provider

4. identifiedMar 16, 2026, 2:05 PM UTC

   We are continuing to work on a fix for this issue.

   provider

5. identifiedMar 16, 2026, 3:13 PM UTC

   We are continuing to work on a fix for this issue.

   provider

6. identifiedMar 16, 2026, 3:35 PM UTC

   We are continuing to work on a fix for this issue. This is currently only impacting free Claude.ai users.

   provider

7. resolvedMar 16, 2026, 4:35 PM UTC

   This incident has been resolved.

   provider

Corrections

None so far.

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