Claude down: platform records widespread failures and affects thousands of users this Tuesday

Claude

Claude - Azulblue / Shutterstock.com

The Claude artificial intelligence platform, operated by Anthropic, experienced a significant service outage on Tuesday, April 28. Milhares users around the world were unable to access the chat interface or developer tools.

The monitoring website Downdetector.com recorded more than 2,500 reports of problems as of 10:59 am (Pacífico time). The number grew quickly. Within hours, it surpassed 5,000 users documenting connectivity difficulties across the platform.

Claude – Downdetector 28.04.2026

Quais services were affected

Users faced specific issues when trying to access the Claude Code and Claude Chat interface. Most reports pointed to an inability to maintain stable connections during the peak of the outage.

The data collected indicated a widespread failure in the connection maintenance infrastructure. The issue affected both standard access and dedicated login routes for developers.

  • Claude Chat (main interface)
  • Claude Code (programming tool)
  • Anthropic API (access to integrated applications)
  • Caminhos authentication and login

What Anthropic reported

The platform’s official status checker confirmed the technical difficulties around mid-morning. The company publicly acknowledged the incident through its internal monitoring systems.

“We have identified an issue resulting in a high number of errors in the Anthropic API, as well as accessibility issues with Claude.ai, including the login paths for Claude Code. Estamos is working to resolve these issues and will provide an update as soon as possible,” the platform’s status checker reported.

Dedicated technical teams have initiated resolution procedures. The focus was on reducing high API error rates and restoring functionality to login entry points.

Impacto in users operation

The outage disrupted standard authentication flows. Tanto casual users and developers who rely on the Anthropic API for production applications were affected simultaneously.

Profissionais that use Claude for assisted programming have reported full access blocks. Usuários’s web interface experienced connection errors and timeouts during login attempts. The scope of the issue spanned different geographic regions, suggesting a centralized failure in the service infrastructure.

The outage occurred during business hours in several parts of the world, affecting critical workflows. Empresas that integrate Claude into their development pipelines have had operations suspended until service is restored.

Company Contexto

Anthropic has become the focus of significant corporate investment in recent months. The company has recently attracted attention in the technology market for its large language model and advanced reasoning capabilities.

Claude competes directly with other generative AI platforms on the market. Service reliability and uptime are critical factors for user retention in a highly competitive industry. Incidentes like this affect public perception about the operational maturity of the platform.

Anthropic maintains technical operations centers in multiple regions to ensure redundancy. Apesar Furthermore, the April 28 failure indicated a vulnerability in the failover systems or a cascade of errors in critical shared components.

Próximas expected actions

The Anthropic engineering team was investigating the root cause of the incident. Atualizações status would be released as restoration work progresses. The company typically publishes post-incident reports detailing what happened, why it happened and how it will be prevented.

Affected Usuários monitored status.claude.ai or official communication channels for recovery notifications. The experience reinforced the importance of contingency plans for cloud-based services that support critical workflows.