Anthropic outage — June 3, 2026
Elevated errors for Mythos 5, Fable 5, Opus 5 and Claude Haiku 4.5
Anthropic’s Claude.ai was disrupted for 52d 12h on June 3, 2026.
Key facts
| Detected | June 3, 2026 · 07:13 UTC |
| Confirmed | 07:13 UTC |
| Resolved | 19:54 UTC |
| Duration | 52d 12h |
| Service | Claude.ai |
| Official record | https://stspg.io/zkm687kx885m |
Timeline
- 07:13Z
Detected · Signal
3 crowd signals for Claude.ai on ANTHROPIC crossed the signal threshold. - 07:13Z
Confirmed · Official
An official ANTHROPIC status-page notice corroborated the event the same cycle. - 19:54Z
Resolved
Signal volume fell back below the threshold; the event was closed.
What people reported
“You might find you have wsl2 installed - that gives you a complete linux system sitting inside windows, that the university might have forgotten to lock down :)”bluesky_jetstream · 13:28 UTC
“Claude AI is reportedly down for some users right now. Are you one of them? #ClaudeDown #Anthropic #ClaudeAiDown https://community.designtaxi.com/topic/33915-i”@statusisdown.bsky.social · 14:04 UTC
“Is Claude AI down for you as well? #ClaudeAI #ClaudeDown https://community.designtaxi.com/topic/33915-is-claude-anthropic-ai-down-july-25-2026/”@statusisdown.bsky.social · 18:11 UTC
How this was detected
1 independent evidence class for claude-ai on ANTHROPIC. 3 crowd reports across bluesky (single platform — not corroborating), z=+0.6σ vs the cell baseline. Official notice confirms it.