# Anthropic in May 2025: incidents, uptime and changes

> Anthropic in May 2025: 35 incidents on its status page (15 major or critical), 97.51% free of major or critical incidents (vendor-reported). From Rewindex’s archive of Anthropic’s status, pricing and policy pages.

Canonical: https://rewindex.com/company/anthropic/2025/05
Last updated: 2025-06-01T00:00:00Z

- Incidents posted: 35 (major/critical: 15) · Maintenance: 0
- By vendor impact label: critical 2, major 13, minor 18, none 2
- Uptime (vendor-reported): 97.51% free of major/critical incidents, 90.65% free of any incident; outage time 18 h 31 min, incident time 2.9 days
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 0
- Previous month: [April 2025](https://rewindex.com/company/anthropic/2025/04.md) · Next: [June 2025](https://rewindex.com/company/anthropic/2025/06.md) · [All months](https://rewindex.com/company/anthropic/reports.md) · [Anthropic](https://rewindex.com/company/anthropic.md)

_Uptime: Derived from the incidents the vendor posted on its own status page, not measured by us. A minute counts as an outage minute when a major or critical incident (as the vendor labelled it) was open; incident minutes include minor ones too. Maintenance and incidents marked "no impact" are left out, overlapping incidents are merged, a resolved incident counts for at most 7 days, and one still open with no resolution counts for at most 24 hours._

## Major and critical incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [Elevated errors on Claude.ai and the Anthropic Console](https://rewindex.com/company/anthropic/incidents/5ww9gdw94j3c.md) | critical | 2025-05-12 20:32 UTC | 2025-05-12 20:58 UTC | 26 min | resolved |
| [Claude.ai and console.anthropic.com down](https://rewindex.com/company/anthropic/incidents/kr7vv24cr0sn.md) | critical | 2025-05-27 22:25 UTC | 2025-05-28 00:40 UTC | 2.3 h | resolved |
| [Elevated errors on Claude 3 Opus](https://rewindex.com/company/anthropic/incidents/lmqxmqm67y81.md) | major | 2025-05-02 23:05 UTC | 2025-05-02 23:44 UTC | 39 min | resolved |
| [Elevated errors for Haiku 3 and Haiku 3.5](https://rewindex.com/company/anthropic/incidents/8sv8clyygfy3.md) | major | 2025-05-09 00:41 UTC | 2025-05-09 01:19 UTC | 38 min | resolved |
| [Elevated errors on Research](https://rewindex.com/company/anthropic/incidents/926d2gm87s8c.md) | major | 2025-05-09 18:46 UTC | 2025-05-09 21:48 UTC | 3.0 h | resolved |
| [Elevated errors for requests to Claude 3.5 Haiku](https://rewindex.com/company/anthropic/incidents/2hm7q2m6pvsh.md) | major | 2025-05-09 19:44 UTC | 2025-05-09 20:02 UTC | 18 min | resolved |
| [Elevated errors in the API](https://rewindex.com/company/anthropic/incidents/j080x9g1v5pw.md) | major | 2025-05-10 05:51 UTC | 2025-05-10 06:19 UTC | 28 min | resolved |
| [Elevated 500 Internal Server Errors for API and Claude.ai](https://rewindex.com/company/anthropic/incidents/rw3gjsvcny0l.md) | major | 2025-05-12 08:19 UTC | 2025-05-12 11:34 UTC | 3.3 h | resolved |
| [Errors when logging into Claude.ai](https://rewindex.com/company/anthropic/incidents/5ltb4qbr0l6l.md) | major | 2025-05-13 20:00 UTC | 2025-05-13 20:50 UTC | 50 min | resolved |
| [Elevated errors for web search requests on API](https://rewindex.com/company/anthropic/incidents/v4b1tfthxmxn.md) | major | 2025-05-18 23:03 UTC | 2025-05-19 01:37 UTC | 2.6 h | resolved |
| [Elevated errors across many models](https://rewindex.com/company/anthropic/incidents/mmk2nx0mc4ph.md) | major | 2025-05-21 10:23 UTC | 2025-05-21 11:10 UTC | 47 min | resolved |
| [Elevated errors on requests to some models](https://rewindex.com/company/anthropic/incidents/5xj7vrg9y21k.md) | major | 2025-05-21 17:04 UTC | 2025-05-21 18:21 UTC | 1.3 h | resolved |
| [MCP tool calling issues for Advanced Research queries in Claude.ai](https://rewindex.com/company/anthropic/incidents/5mjbw9649jrd.md) | major | 2025-05-21 18:29 UTC | 2025-05-21 20:38 UTC | 2.1 h | resolved |
| [Elevated errors on requests to some models](https://rewindex.com/company/anthropic/incidents/kknx3x153yhp.md) | major | 2025-05-21 20:19 UTC | 2025-05-21 20:40 UTC | 21 min | resolved |
| [Elevated errors on requests to some models](https://rewindex.com/company/anthropic/incidents/zbjx86j1mg7s.md) | major | 2025-05-21 23:30 UTC | 2025-05-21 23:39 UTC | 9 min | resolved |

## All incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [SSO Sign-In Issues](https://rewindex.com/company/anthropic/incidents/cbpk1sqc6v9q.md) | none | 2025-05-01 14:13 UTC | 2025-05-01 17:01 UTC | 2.8 h | resolved |
| [Elevated errors on Claude 3 Opus](https://rewindex.com/company/anthropic/incidents/lmqxmqm67y81.md) | major | 2025-05-02 23:05 UTC | 2025-05-02 23:44 UTC | 39 min | resolved |
| [Elevated Errors on Haiku 3.5](https://rewindex.com/company/anthropic/incidents/rv4zh0hpkm9w.md) | minor | 2025-05-03 14:15 UTC | 2025-05-03 14:57 UTC | 42 min | resolved |
| [Elevated errors on Claude 3.7 Sonnet](https://rewindex.com/company/anthropic/incidents/vgdh8f4m5851.md) | minor | 2025-05-06 06:50 UTC | 2025-05-06 07:27 UTC | 37 min | resolved |
| [Elevated errors on Claude 3.7 Sonnet](https://rewindex.com/company/anthropic/incidents/y2dry64545ng.md) | minor | 2025-05-07 20:07 UTC | 2025-05-07 21:05 UTC | 58 min | resolved |
| [Elevated errors for requests to Claude 3 Sonnet](https://rewindex.com/company/anthropic/incidents/6tf363t3jg7j.md) | minor | 2025-05-07 21:52 UTC | 2025-05-07 22:00 UTC | 8 min | resolved |
| [Elevated errors for requests to Claude 3.5 Haiku](https://rewindex.com/company/anthropic/incidents/thplgp0flkgb.md) | minor | 2025-05-08 05:02 UTC | 2025-05-08 05:15 UTC | 13 min | resolved |
| [Elevated errors for requests to Claude 3.5 Haiku](https://rewindex.com/company/anthropic/incidents/w8t96mbsnztr.md) | minor | 2025-05-08 14:08 UTC | 2025-05-08 15:03 UTC | 55 min | resolved |
| [Elevated errors for requests to Claude 3.5 Sonnet](https://rewindex.com/company/anthropic/incidents/cdc4w6l8d7q8.md) | minor | 2025-05-08 15:23 UTC | 2025-05-08 15:36 UTC | 13 min | resolved |
| [Elevated errors for Haiku 3 and Haiku 3.5](https://rewindex.com/company/anthropic/incidents/8sv8clyygfy3.md) | major | 2025-05-09 00:41 UTC | 2025-05-09 01:19 UTC | 38 min | resolved |
| [Elevated errors on Research](https://rewindex.com/company/anthropic/incidents/926d2gm87s8c.md) | major | 2025-05-09 18:46 UTC | 2025-05-09 21:48 UTC | 3.0 h | resolved |
| [Elevated errors for requests to Claude 3.5 Haiku](https://rewindex.com/company/anthropic/incidents/2hm7q2m6pvsh.md) | major | 2025-05-09 19:44 UTC | 2025-05-09 20:02 UTC | 18 min | resolved |
| [Errors when attempting to purchase API credits](https://rewindex.com/company/anthropic/incidents/lqg3ddnqt3nq.md) | minor | 2025-05-10 04:17 UTC | 2025-05-10 06:33 UTC | 2.3 h | resolved |
| [Elevated errors in the API](https://rewindex.com/company/anthropic/incidents/j080x9g1v5pw.md) | major | 2025-05-10 05:51 UTC | 2025-05-10 06:19 UTC | 28 min | resolved |
| [Elevated errors for requests to Claude 3.7 Sonnet](https://rewindex.com/company/anthropic/incidents/93w8n3p2wp2w.md) | minor | 2025-05-12 04:10 UTC | 2025-05-12 04:54 UTC | 44 min | resolved |
| [Elevated 500 Internal Server Errors for API and Claude.ai](https://rewindex.com/company/anthropic/incidents/rw3gjsvcny0l.md) | major | 2025-05-12 08:19 UTC | 2025-05-12 11:34 UTC | 3.3 h | resolved |
| [Elevated errors on Claude.ai and the Anthropic Console](https://rewindex.com/company/anthropic/incidents/5ww9gdw94j3c.md) | critical | 2025-05-12 20:32 UTC | 2025-05-12 20:58 UTC | 26 min | resolved |
| [Errors when logging into Claude.ai](https://rewindex.com/company/anthropic/incidents/5ltb4qbr0l6l.md) | major | 2025-05-13 20:00 UTC | 2025-05-13 20:50 UTC | 50 min | resolved |
| [Elevated errors on long context requests with Claude for Enterprise](https://rewindex.com/company/anthropic/incidents/4yf3jnc1ls9h.md) | minor | 2025-05-15 19:18 UTC | 2025-05-16 22:18 UTC | 27 h | resolved |
| [Elevated errors when attempting to purchase API credits](https://rewindex.com/company/anthropic/incidents/6cs7987b0rkh.md) | minor | 2025-05-17 15:58 UTC | 2025-05-17 19:54 UTC | 3.9 h | resolved |
| [Elevated errors for web search requests on API](https://rewindex.com/company/anthropic/incidents/v4b1tfthxmxn.md) | major | 2025-05-18 23:03 UTC | 2025-05-19 01:37 UTC | 2.6 h | resolved |
| [Elevated errors across many models](https://rewindex.com/company/anthropic/incidents/mmk2nx0mc4ph.md) | major | 2025-05-21 10:23 UTC | 2025-05-21 11:10 UTC | 47 min | resolved |
| [Elevated errors on requests to some models](https://rewindex.com/company/anthropic/incidents/5xj7vrg9y21k.md) | major | 2025-05-21 17:04 UTC | 2025-05-21 18:21 UTC | 1.3 h | resolved |
| [MCP tool calling issues for Advanced Research queries in Claude.ai](https://rewindex.com/company/anthropic/incidents/5mjbw9649jrd.md) | major | 2025-05-21 18:29 UTC | 2025-05-21 20:38 UTC | 2.1 h | resolved |
| [Elevated errors on requests to some models](https://rewindex.com/company/anthropic/incidents/kknx3x153yhp.md) | major | 2025-05-21 20:19 UTC | 2025-05-21 20:40 UTC | 21 min | resolved |
| [Elevated errors on requests to some models](https://rewindex.com/company/anthropic/incidents/zbjx86j1mg7s.md) | major | 2025-05-21 23:30 UTC | 2025-05-21 23:39 UTC | 9 min | resolved |
| [Errors with images on Claude.ai conversations with Claude Sonnet 4](https://rewindex.com/company/anthropic/incidents/r9yw4d0dxc27.md) | minor | 2025-05-22 19:42 UTC | 2025-05-22 21:44 UTC | 2.0 h | resolved |
| [Elevated errors on tool use for Claude Code on Opus 4](https://rewindex.com/company/anthropic/incidents/6kgk2l0kzdkh.md) | minor | 2025-05-22 21:37 UTC | 2025-05-22 22:32 UTC | 55 min | resolved |
| [Elevated errors on Claude Sonnet 4](https://rewindex.com/company/anthropic/incidents/ppkynb6d77s7.md) | minor | 2025-05-23 08:27 UTC | 2025-05-23 10:31 UTC | 2.1 h | resolved |
| [Incorrect display of 'Legacy Model' on Claude.ai for conversations with Opus 4](https://rewindex.com/company/anthropic/incidents/xsz3fc747v2f.md) | none | 2025-05-24 00:46 UTC | 2025-05-24 00:46 UTC | 0 min | resolved |
| [Elevated errors for requests to Claude 4 Opus](https://rewindex.com/company/anthropic/incidents/ycnp1ygrywxw.md) | minor | 2025-05-26 12:45 UTC | 2025-05-26 15:15 UTC | 2.5 h | resolved |
| [Elevated errors for requests to Claude 4 Opus](https://rewindex.com/company/anthropic/incidents/0ptr6m8tx2xy.md) | minor | 2025-05-26 18:28 UTC | 2025-05-27 00:12 UTC | 5.7 h | resolved |
| [Elevated errors with code execution tools](https://rewindex.com/company/anthropic/incidents/z8vp0ysl8j7k.md) | minor | 2025-05-26 23:06 UTC | 2025-05-27 00:36 UTC | 1.5 h | resolved |
| [Claude.ai and console.anthropic.com down](https://rewindex.com/company/anthropic/incidents/kr7vv24cr0sn.md) | critical | 2025-05-27 22:25 UTC | 2025-05-28 00:40 UTC | 2.3 h | resolved |
| [Elevated errors on Claude Sonnet 4 for Claude.ai](https://rewindex.com/company/anthropic/incidents/1w83wpml7m9y.md) | minor | 2025-05-29 14:05 UTC | 2025-05-29 14:18 UTC | 13 min | resolved |

## Cite this

Anthropic posted 35 status incidents in May 2025 (15 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/anthropic/2025/05
- Citation: Anthropic, “Anthropic in May 2025” (2025-05-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/anthropic/2025/05 (CC BY 4.0).
- Markdown link: `[Anthropic: Anthropic in May 2025 (2025-05-01)](https://rewindex.com/company/anthropic/2025/05)`


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Canonical: https://rewindex.com/company/anthropic/2025/05 · Markdown: https://rewindex.com/company/anthropic/2025/05.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T14:41:54.788Z