Editorial illustration for Major AI chatbots ChatGPT, Grok, and Claude experience simultaneous outage
ChatGPT, Claude, Grok Down in Massive AI Outage
Major AI chatbots ChatGPT, Grok, and Claude experience simultaneous outage
ChatGPT, Grok, and Claude all broke on Thursday within roughly two hours of each other, cutting off millions of users from three of the most widely used AI chatbots at once. OpenAI's status page flagged "elevated errors across ChatGPT and Codex" starting around 11AM ET, with the outage knocking out logins, file uploads, voice mode, search, deep research, and image generation. The timing was awkward for OpenAI specifically: the company was in the middle of teasing its new Astra model when its own product stopped responding.
Anthropic ran into trouble around the same window, with technical staff member CJ Avilla attributing a partial outage across Claude, Claude Code, and the Claude API to an "infrastructure issue." xAI's Grok went down earlier still, starting at 9:30AM ET across Android, iOS, and web, spitting back overload messages to anyone trying to prompt it on X. xAI later traced its problem to a data center in Memphis.
Three separate companies, three separate platforms, all stumbling in the same stretch of a single morning. Whether that's coincidence or something connecting the outages is still an open question.
OpenAI’s ChatGPT, xAI’s Grok, and Anthropic’s Claude are back online after they all began experiencing issues around the same time on Thursday. At about 11AM ET, ChatGPT started returning error messages for users trying to use the chatbot, with its status page saying there were “elevated errors across ChatGPT and Codex.”
Why this matters
Three separate companies, three separate infrastructures, and yet ChatGPT, Grok, and Claude all buckled within the same window on Thursday. That's the detail worth sitting with. Whether it traces back to a shared cloud provider, a common dependency, or plain coincidence, we don't know yet, and nobody involved has said.
But for developers and founders who've spent the last two years wiring these APIs into production systems, the outage is a reminder that "multi-model redundancy" is often theater. If your fallback plan is switching from OpenAI to Anthropic to xAI when one goes down, Thursday showed that plan can fail all at once. The timing stings too: OpenAI was mid-tease on its Astra model launch when Codex and ChatGPT started throwing errors on logins, uploads, voice mode, and image generation.
For an industry that keeps telling enterprises to build critical workflows on top of these tools, a synchronized failure across the three most-cited chatbots is exactly the kind of incident that should get logged, not shrugged off.
Related Reading
Browse all OpenAI news →
LLMs & Generative AI ChatGPT's 'Nerdy' tweak rewards goblin metaphors in answers, study finds
LLMs & Generative AI Google tests visual 'magazine-style' UI for Gemini 3 Pro users
LLMs & Generative AI AI Engineers Face Rising Costs, Need New Strategies for Efficiency
Related Topic OpenAI's GPT Transcribe Cuts Error Rate to 3.31%, Improving on GPT-4o
Open Source
Related Topic OpenAI Calls Apple's Lawsuit 'Rotten to Its Core' in Rebuttal
Policy & Regulation
From Archives OpenAI’s GPT-6 Astra Hits 72.6% OSWorld Benchmark, Cuts Task Time
From Archives Four AI Models Down Simultaneously, Fixed Within 30 Minutes
From Archives OpenAI’s Astra AI Model Scores 72.6% on OSWorld Computer Operation Test
From Archives OpenAI says new AI model Astra is its 'most aligned model yet
Business & Startups
Common Questions Answered
What specific ChatGPT features were affected during the Thursday outage?
The outage knocked out multiple critical ChatGPT features including logins, file uploads, voice mode, search, deep research, and image generation capabilities. OpenAI's status page reported elevated errors across ChatGPT and Codex starting around 11AM ET, preventing users from accessing these essential functionalities.
Why is the simultaneous outage of ChatGPT, Grok, and Claude significant for developers?
The simultaneous failure of three major AI chatbots from separate companies with different infrastructures suggests a potential shared dependency or common cloud provider issue, which raises concerns about system resilience. For developers who have integrated these APIs into production systems, the outage serves as a critical reminder of the importance of implementing multi-model redundancy to avoid complete service failures.
What was the timeline of the ChatGPT, Grok, and Claude outage on Thursday?
All three AI chatbots experienced service disruptions within roughly two hours of each other on Thursday, with ChatGPT beginning to return error messages around 11AM ET. The companies' services have since been restored, though the exact cause of the simultaneous outage across the three separate platforms has not been officially disclosed.
What was the unfortunate timing for OpenAI during the ChatGPT outage?
OpenAI was in the middle of teasing its new Astra model when ChatGPT experienced the outage that cut off millions of users from the service. This timing compounded the negative impact of the service disruption during what should have been a positive announcement period for the company.
Further Reading
- ChatGPT, Claude and Grok All Go Down at Once - SecurityPointBreak
- AI disruption: ChatGPT, Claude back up after outage - KENS 5
- ChatGPT, Claude and Grok Outages Leave Users Asking How to Work Without AI - Decrypt
- ChatGPT, Claude and Grok hit by simultaneous outages - Data Center Dynamics
- Widespread AI outage underway - Axios
