Anthropic reports multiple service issues

Anthropic is dealing with 3 concurrent service issues — tracked live below.

By The Downtime · Jul 25, 2026 · 6:45 PM ·Updated 4 weeks ago

Anthropic is investigating elevated error rates affecting requests to Claude Mythos 5, Claude Fable 5, and Claude Haiku 4.5, according to the company's status page. The incident is classified as major in impact. No timeline for resolution has been provided.

Anthropicis an AI safety company that develops Claude, a large language model used by developers, enterprises, and researchers for a range of applications.

The company posted an initial investigating notice but has not yet provided additional details or updates on the scope or cause of the errors.

This is a developing story. The Downtime will update as more information becomes available.

⚠️ Issues being tracked (3)

Elevated errors for Claude Mythos 5, Claude Fable 5, and Claude Haiku 4.5

Resolved

source ↗

Elevated error rate on Opus 4.8

Resolved

source ↗

Elevated errors on Haiku 4.5

Resolved

source ↗

🕒 Live updates (9)

resolved Elevated errors for Mythos 5, Fable 5, O... Jul 25, 7:44 PM

This incident has been resolved.

identified Elevated errors for Mythos 5, Fable 5, O... Jul 25, 6:44 PM

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

investigating Elevated errors for Claude Mythos 5, Cla... Jul 25, 6:40 PM

We are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, and Claude Haiku 4.5. We will provide an update as soon as possible.

investigating Elevated errors for Mythos 5, Fable 5, O... Jul 25, 6:40 PM

We are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, and Claude Haiku 4.5. We will provide an update as soon as possible.

resolved Elevated error rate on Opus 4.8 Jul 24, 10:22 AM

This incident has been resolved.

monitoring Elevated error rate on Opus 4.8 Jul 24, 9:35 AM

A fix has been implemented and we are monitoring the results.

investigating Elevated error rate on Opus 4.8 Jul 24, 9:09 AM

We are currently investigating this issue.

resolved Elevated errors on Haiku 4.5 Jul 23, 12:10 AM

This incident has been resolved.

investigating Elevated errors on Haiku 4.5 Jul 22, 11:52 PM

We are currently investigating this issue.

📎 Sources

Anthropic status ↗

Outage details are aggregated from official provider status pages. The Downtime reports them as a public service and is not affiliated with the providers named.