Claude.ai unavailable and elevated errors on the API
status.claude.com
April 28, 2026
1 min read
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60/100
Summary
Claude.ai experienced service unavailability and elevated authentication errors on the API from 17:34 to 18:52 UTC. Efforts are ongoing to resolve the access issues and restore normal functionality.
Key Takeaways
- Users experienced accessibility issues with Claude.ai and elevated authentication errors on the Anthropic API from 17:34 to 18:52 UTC on April 28, 2026.
- The issues affected multiple services, including Claude Console, Claude Code, and Claude Cowork.
- The team has identified the problem and is actively working to resolve the issues preventing access to Claude.ai.
- Success rates across all services have returned to normal following the incident.
Community Sentiment
Positives
- Running local models on dedicated hardware can provide greater reliability and performance, as evidenced by organizations achieving high throughput without downtime.
- Fine-tuning models on company-specific data enhances performance, allowing for more efficient code generation and reduced rewriting efforts.
Concerns
- Anthropic's API has suffered from significant outages, leading to frustration among users who are spending over $200,000 monthly for unreliable service.
- The current uptime of just one 9 indicates severe reliability issues, raising concerns about the viability of using Claude for production applications.
- The challenges faced by Anthropic highlight the necessity for competent human engineers in managing AI systems, especially when reliability is compromised.
