# Claude change history Filter: kind=all. Query: `?kind=notable|all|pages|pricing|trust|legal|incident|incident_edit|incident_deleted|incident_update&history=&page=N`. Company profile: [Claude](https://rewindex.com/company/claude.md) ## Changes by kind | Kind | Changes | Notable | Latest (UTC) | | --- | --- | --- | --- | | Major incident | 22 | 22 | 2026-10-07 13:25 UTC | ## Timeline | When (UTC) | Kind | Change | Label | Summary | | --- | --- | --- | --- | --- | | 2026-10-07 13:25 UTC | Major incident | [Major incident: Elevated errors on platform.claude.com](https://rewindex.com/change/i2aaa21e2d77e73.md) | degradation | Claude reported a major incident affecting usage data on the Console Usage and Rate limits pages and Admin API usage report, starting 2026-10-07 13:25 UTC and resolved 2026-10-13 18:00 UTC (6 days 4 h). Mitigations restored reporting, though recent usage could be delayed by about 30 minutes; core functionality and API requests were unaffected. | | 2026-10-07 01:20 UTC | Major incident | [Major incident: Elevated errors loading usage data on platform.claude.com](https://rewindex.com/change/ic26ec8866eff89.md) | outage | Claude Console’s Usage page and Admin API usage report returned errors; Messages API requests were unaffected. The major incident started at 2026-10-07 01:20 UTC and was resolved at 2026-10-07 02:33 UTC (1 h 13 min). Claude reported the actual error window as 00:00 UTC on October 7 to 01:40 UTC on October 7. | | 2026-10-06 12:24 UTC | Major incident | [Major incident: Elevated errors for Claude Opus 5.5](https://rewindex.com/change/i1e447a5fb7e482.md) | outage | Claude reported a major incident involving elevated errors for Claude Opus 5.5 across claude.ai, Claude API (api.anthropic.com), Claude Code, and Claude Cowork. It started at 2026-10-06 12:24 UTC and was resolved at 2026-10-06 12:43 UTC, lasting 18 min. Claude said it identified the cause but did not disclose the cause or fix. | | 2026-10-05 13:05 UTC | Major incident | [Major incident: Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1](https://rewindex.com/change/i9e2e08048ef594.md) | outage | Claude reported major elevated errors for Claude Mythos 5.1 and Claude Fable 5.1 across claude.ai, Claude API (api.anthropic.com), Claude Code and Claude Cowork. The incident started at 2026-10-05 13:05 UTC and resolved at 2026-10-05 13:21 UTC (computed duration: 15 min); the vendor separately stated an impact window of 12:40 UTC to 13:10 UTC. | | 2026-09-29 14:21 UTC | Major incident | [Major incident: Elevated errors on claude.ai, Claude Code, Claude Cowork and the Claude API](https://rewindex.com/change/ia22d9efa936e83.md) | outage | A major incident caused errors across claude.ai, Claude Code, Claude Cowork and the Claude API, disrupting sign-ins and other workflows; some messages may not have been saved. Reported impact was 14:00–14:59 UTC on 2026-09-29. The incident record started at 2026-09-29 14:21 UTC and resolved at 2026-09-29 16:27 UTC (computed duration: 2 h 5 min). | | 2026-09-22 00:57 UTC | Major incident | [Major incident: Elevated errors for multiple models](https://rewindex.com/change/i39bc99a428c716.md) | outage | Claude reported major elevated request errors affecting Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5. The incident started at 2026-09-22 00:57 UTC and resolved at 2026-09-22 02:35 UTC, lasting 1 h 37 min; the final update reported customer impact from 00:50 UTC to 02:10 UTC. | | 2026-09-15 09:48 UTC | Major incident | [Major incident: Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1](https://rewindex.com/change/ib3fc50d64d3886.md) | degradation | Claude reported major intermittent errors for Claude Mythos 5.1 and Claude Fable 5.1 affecting claude.ai, Claude API (api.anthropic.com), Claude Code and Claude Cowork. The incident ran from 2026-09-15 09:48 UTC to 2026-09-15 11:14 UTC, lasting 1 h 26 min. A fix was deployed at 10:50 UTC, followed by monitoring and resolution. | | 2026-09-11 14:19 UTC | Major incident | [Major incident: Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1](https://rewindex.com/change/i8dec3c3c7823ef.md) | outage | Claude reported major elevated errors for Claude Mythos 5.1 and Claude Fable 5.1 across claude.ai, Claude API (api.anthropic.com), Claude Code and Claude Cowork. The incident started 2026-09-11 14:19 UTC and resolved 2026-09-11 14:37 UTC (17 min); reported impact was 13:57–14:20 UTC. A fix was deployed at 14:28 UTC. | | 2026-09-10 15:54 UTC | Major incident | [Major incident: Degraded functionality for Claude Cowork on Windows](https://rewindex.com/change/i0e14d7c78a9105.md) | degradation | Claude Cowork on Windows could not run local commands after a September 8 Windows update blocked workspace access to the computer’s drive; chat and file reading/editing mostly worked. The major incident ran from 2026-09-10 15:54 UTC to 2026-09-14 19:14 UTC (4 days 3 h), resolved by Microsoft’s September 14 Windows update. | | 2026-09-03 13:26 UTC | Major incident | [Major incident: Elevated errors for multiple models](https://rewindex.com/change/i6386734b3ed5c5.md) | outage | Claude reported a major incident with elevated errors affecting multiple models across claude.ai, Claude API (api.anthropic.com), Claude Code and Claude Cowork. It started at 2026-09-03 13:26 UTC and was resolved at 2026-09-03 16:23 UTC, lasting 2 h 57 min. A fix was deployed; the vendor said customer impact ended at 16:16 UTC. | | 2026-09-03 12:37 UTC | Major incident | [Major incident: Elevated errors for Claude Sonnet 5](https://rewindex.com/change/i3cf2a1d29ae856.md) | outage | Claude Sonnet 5 requests experienced elevated errors across claude.ai, Claude API (api.anthropic.com), Claude Code and Claude Cowork in a major-impact incident starting 2026-09-03 12:37 UTC. A fix was implemented by 12:47 UTC; the incident was resolved at 2026-09-03 12:56 UTC, with a reported duration of 18 min. | | 2026-09-02 21:17 UTC | Major incident | [Major incident: Elevated errors for Claude Sonnet 5](https://rewindex.com/change/icd792bac8b9ec1.md) | outage | Claude reported a major incident involving elevated Claude Sonnet 5 request errors across claude.ai, Claude API (api.anthropic.com), Claude Code and Claude Cowork. The incident started at 2026-09-02 21:17 UTC and was resolved at 2026-09-02 21:44 UTC (computed duration: 26 min); the vendor stated actual impact occurred from 21:05 UTC to 21:19 UTC. | | 2026-08-28 17:22 UTC | Major incident | [Major incident: Elevated errors on Claude Code and Claude Cowork](https://rewindex.com/change/i28b75630300883.md) | outage | Claude reported a major incident affecting Claude Cowork and Claude Code on the web from 2026-08-28 17:22 UTC to 2026-08-28 20:21 UTC, lasting 2 h 59 min. Some sessions failed to start or disconnected mid-task due to an upstream cloud provider issue; affected sessions could be retried. A mitigation was applied before resolution. | | 2026-08-24 05:06 UTC | Major incident | [Major incident: Elevated errors for multiple models](https://rewindex.com/change/ibea87dc22b5962.md) | outage | Claude reported a major incident involving elevated errors across claude.ai, Claude API (api.anthropic.com), Claude Code and Claude Cowork, affecting Claude Mythos 5, Claude Fable 5, Claude Opus 5 and Claude Opus 4.8. It started 2026-08-24 05:06 UTC and was resolved 2026-08-24 08:30 UTC, lasting 3 h 24 min. | | 2026-08-20 19:16 UTC | Major incident | [Major incident: Elevated errors on requests to multiple models](https://rewindex.com/change/i8f0f722a92fb66.md) | outage | Claude reported a major incident involving elevated errors on requests to multiple models, affecting claude.ai, Claude API (api.anthropic.com), Claude Code, and Claude Cowork. It started at 2026-08-20 19:16 UTC and was resolved at 2026-08-20 19:42 UTC, lasting 26 min; no cause or fix details were stated. | | 2026-08-16 21:58 UTC | Major incident | [Critical incident: Service disruption on Claude services](https://rewindex.com/change/i3f66df5f230ad5.md) | outage | Claude reported a critical disruption involving authentication issues on claude.ai, Claude Code, and Claude Cowork, plus degraded performance across those services, Claude Console, and the Claude API. It started at 2026-08-16 21:58 UTC and was resolved at 2026-08-16 22:34 UTC, lasting 35 min; a fix was deployed at 22:22 UTC. | | 2026-08-14 23:57 UTC | Major incident | [Major incident: Elevated errors for Claude Fable 5](https://rewindex.com/change/i7cb4356ce2279c.md) | outage | Claude reported elevated errors for Claude Fable 5 affecting claude.ai, with major impact. The incident started at 2026-08-14 23:57 UTC and was resolved at 2026-08-15 00:27 UTC (30 min). The resolution update separately stated customer impact occurred from 20:00 Aug 14, 2026 to 00:11 Aug 15, 2026 UTC. | | 2026-08-14 20:30 UTC | Major incident | [Major incident: Service disruption on Claude services](https://rewindex.com/change/i3132f39a227e87.md) | degradation | Claude reported a major degradation affecting Claude API (api.anthropic.com), Claude Code, and Claude Cowork, starting 2026-08-14 20:30 UTC and resolved at 2026-08-14 21:58 UTC (computed duration: 1 h 27 min). The vendor reported actual impact from 20:14 to 20:38 UTC. A fix was deployed at 20:44 UTC; the cause was not specified. | | 2026-08-13 14:33 UTC | Major incident | [Major incident: Elevated errors for Claude Mythos 5, Claude Fable 5, and Claude Sonnet 5](https://rewindex.com/change/i1e3d07b0a3e2e4.md) | outage | Claude reported a major incident involving elevated request errors for Claude Mythos 5, Claude Fable 5, and Claude Sonnet 5, affecting claude.ai, Claude API (api.anthropic.com), Claude Code, and Claude Cowork. It started at 2026-08-13 14:33 UTC and was resolved at 2026-08-13 16:08 UTC, lasting 1 h 34 min; the resolution update named Mythos 5 and Fable 5. | | 2026-08-04 20:48 UTC | Major incident | [Major incident: Elevated errors across many models](https://rewindex.com/change/i08175f31d2aba8.md) | outage | Claude reported a major incident affecting claude.ai, Claude API (api.anthropic.com), Claude Code and Claude Cowork: some users had login issues, including via oAuth, and model request errors. It started at 2026-08-04 20:48 UTC and was resolved at 2026-08-04 21:59 UTC, lasting 1 h 11 min; success rates had recovered by 21:04 UTC. | | 2026-07-30 05:57 UTC | Major incident | [Major incident: Elevated errors across many models](https://rewindex.com/change/if0b55baf28026f.md) | outage | Claude reported a major incident involving elevated errors across many models, affecting claude.ai, Claude API (api.anthropic.com), Claude Code and Claude Cowork. It started at 2026-07-30 05:57 UTC and was resolved at 2026-07-30 10:48 UTC, lasting 4 h 51 min; partial recovery was followed by renewed errors across all models. | | 2026-07-29 19:49 UTC | Major incident | [Critical incident: Elevated errors across all models](https://rewindex.com/change/ib12556f54100c9.md) | outage | Claude reported a critical incident involving elevated errors across all models, affecting claude.ai, Claude API (api.anthropic.com), Claude Code, and Claude Cowork. It started at 2026-07-29 19:49 UTC and was resolved at 2026-07-29 22:36 UTC, lasting 2 h 46 min; Claude confirmed recovery in success rates across all models. | --- Canonical: https://rewindex.com/company/claude/changes · Markdown: https://rewindex.com/company/claude/changes.md · JSON: https://rewindex.com/api/v1/companies/claude/changes · Generated 2026-10-18T02:31:23.379Z