Anthropic

We are investigating an issue with Claude Sonnet 4.0 that started at 23:35 PT / 6:35 UTC.

We are investigating issues loading Artifacts in Claude.ai.

We are investigating an issue with Claude Opus 4.1 that started at 04:10 PT / 11:10 UTC. This is a repeat of the incident earlier.

We are investigating an issue with Claude Haiku 3.5 that started at 3:45 PT / 10:45 UTC.

We are investigating an issue with Claude Opus 4.1 that started at 23:15 PT / 6:15 UTC.

We are investigating an issue with Claude Opus 4.1 that started at 6:10 PT / 13:10 UTC.

APIs, Console, and Claude.ai are down. Services will be restored as soon as possible.

Multiple users report inability to log in, receiving errors about login links and general login failures. Common issue seems related to system connectivity or server problems.

We are investigating an issue with Claude Sonnet 4.0 that started at 23:53 PT / 6:53 UTC

We are currently investigating this issue.

Last week, we opened an incident to investigate degraded quality in some Claude model responses. We found two separate issues that we’ve now resolved. We are continuing to monitor for any ongoing quality issues, including reports of degradation for Claude Opus 4.1. Resolved issue 1 - A small percentage of Claude Sonnet 4 requests experienced degraded output quality due to a bug from Aug 5-Sep ...

We are currently investigating this issue.

We are currently investigating this issue.

We are currently investigating this issue.

We are investigating an issue with Claude Opus 4.1 that started at 7:30 PT / 14:30 UTC.

We are investigating an issue with Claude Haiku 3.5 that started at 6:00 PT / 13:00 UTC.

We are investigating an issue with Claude Sonnet 4.0 that started at 23:25 PT / 6:25 UTC.

We are currently investigating this issue.

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

We are seeing an elevated amount of errors on Sonnet 3.6 since 23:10 PT / 6:10 UTC.

We are continuing to investigate this issue.

We are investigating an issue with Claude Sonnet 4.0 that started at 22:30 PT / 5:30 UTC.

We are investigating an issue with Claude Sonnet 4.0 that started at 22:30 PT / 5:30 UTC.

From 17:30 UTC on Aug 25th to 02:00 UTC on Aug 28th, Claude Opus 4.1 experienced a degradation in quality for some requests. Users may have seen lower intelligence, malformed responses or issues with tool calling in Claude Code. This was caused by a rollout of our inference stack, which we have since rolled back for Claude Opus 4.1. While we often make changes intended to improve the efficienc...

We are investigating an issue with Claude Sonnet 4.0 that started at 22:30 PT / 5:30 UTC.

We are currently investigating this issue.

We are currently investigating this issue.

We have seen errors return to the baseline level since 5:05 PT / 13:05 UTC.

We are investigating an issue with Claude Opus 4.1 that started at 23:10 PT / 6:10 UTC.

We are investigating an issue with Claude Opus 4.1 similar to the one that happened earlier, this time starting with 4:14 PT / 11:14 UTC.

We are investigating an issue with Claude Opus 4.1 that started at 23:08 PT / 6:08 UTC.

We are currently investigating this issue.

Claude.ai is failing to downgrade MCP connections to SSE for a limited number of MCP servers. We are currently investigating.

We are currently investigating this issue.

We are currently investigating this issue.

Starting ~15:50 PT for Opus 4 and ~11:40 PT for Opus 4.1

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

We are currently investigating this issue.

We are currently investigating this issue.

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

We are currently investigating this issue.

We are currently investigating this issue.

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

We are investigating an elevated error rate on Claude Opus 4.1 that started since 6:22 PT / 13:22 UTC.

We have identified an issue that, since August 18, has caused Team plan organizations to be unable to add more members. We are working on a fix.