Claude.ai is currently inaccessible, with increased API errors. Urgent response needed.
Claude.ai Unavailable and Increased Errors on the API
Original: Claude.ai unavailable and elevated errors on the API
Importance: ユーザーに直接影響を及ぼす重大なサービス障害
Summary
On April 28, 2026, Anthropic identified issues preventing access to Claude.ai and resulting in increased errors on the API, including login paths for Claude Code. They are working to resolve these issues and will provide updates as soon as possible.
Key Points
- Issue accessing Claude.ai
- Increased errors on the API
- Impact on Claude Code login paths
- Working towards a resolution
- Updates will be provided as progress is made
View developer notes (APIs, breaking changes, migration)
On April 28, 2026, Anthropic identified elevated errors on their API and issues accessing Claude.ai, specifically affecting login paths for Claude Code. They are currently working on resolving these issues and will update when progress is made.
Source: https://status.claude.com/incidents/9l93x2ht4s5w
Outlet: Anthropic Status
This article is an AI-generated summary (OpenAI GPT-4o-mini) of publicly available information from Anthropic, OpenAI, Google, Meta, Mistral, DeepSeek, Sakana, and other vendors. The original source URL is always provided in accordance with fair-use citation requirements. Summaries are AI-generated and may contain mistranslations or misinterpretations. Always verify details with the original source.