ChatGPT, Grok, and Claude experience simultaneous outages

Timeline of the outages

On Thursday at roughly 9:30 AM ET, xAI’s Grok began returning an overload notice on Android, iOS, and web platforms.

The message displayed read: “This model is overloaded right now. Please try again shortly or pick a different model.”

At about 11 AM ET, OpenAI’s ChatGPT started showing error messages for users attempting to start conversations.

The company’s status page listed “elevated errors across ChatGPT and Codex.”

Simultaneously, the outage disrupted logins, file uploads, voice mode, search, deep research, image generation, and other functionalities.

Anthropic’s Claude services, including Claude Code and the Claude API, went down shortly after the ChatGPT issue emerged.

Technical staff member CJ Avilla attributed the problem to an “infrastructure issue.”

Anthropic announced that the issue was resolved around 12:15 PM ET.

xAI later confirmed that Grok’s problem stemmed from an outage at its Memphis data center and has since been fixed.

Impact on users and services

The concurrent failures affected millions of users who rely on the three chatbots for daily tasks and enterprise workflows.

ChatGPT users were unable to access conversational AI, generate images, or use the newly teased Astra model during the downtime.

Grok’s overload notice prevented developers and casual users on X from prompting the model, limiting real‑time interactions.

Claude’s partial outage halted access to Claude Code, affecting developers who integrate the API into coding assistants.

Because the services share overlapping use cases, the simultaneous loss amplified concerns about the resilience of AI‑driven productivity tools.

Possible causes and industry reaction

The Verge reported no definitive link between the three incidents, noting that each company cited separate technical explanations.

OpenAI’s error message suggested broader platform instability, while Anthropic pointed to an infrastructure glitch and xAI blamed a regional data‑center failure.

Industry observers note that the timing of the ChatGPT error coincided with OpenAI’s teaser of its upcoming Astra model, but the source does not confirm any causal relationship.

All three firms restored service within a few hours, indicating that the issues were contained and addressed promptly.

Analysts recommend that enterprises using multiple AI providers consider redundancy strategies to mitigate the risk of simultaneous outages.

Future monitoring of data‑center health and cross‑provider incident reporting may help identify systemic vulnerabilities.

As of the latest update, ChatGPT, Claude, and Grok are back online and functioning normally.

Why This Matters: The brief, overlapping failures highlight the need for robust infrastructure and contingency planning as AI chatbots become integral to everyday digital workflows.