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OpenAI's ChatGPT went down on the morning of September 3, 2026, joining Claude and Grok as AI chatbots experiencing service problems the same day. OpenAI later confirmed the issue had been fixed by early afternoon, restoring normal access for users.
ChatGPT, Codex, Claude and Grok all experienced service disruptions on the same day, with status pages from OpenAI, Anthropic and xAI confirming elevated errors and access issues for users. All three companies said they were investigating the problems, and service has since begun to be restored.
Users across web, mobile and desktop platforms reported widespread disruptions to ChatGPT, Claude and Grok around the same time. xAI confirmed Grok was experiencing a service issue, while OpenAI and Anthropic had not yet detailed the cause of their outages.
Claude experienced a widespread outage on September 3, 2026, with many users reporting they could not access the AI assistant starting around 10:02 AM ET. Anthropic confirmed by 12:27 PM ET that the issue had been fixed and all models were back to normal operation.
Anthropic's threat intelligence chief Jacob Klein says foreign actors, particularly in China, are using illegal methods to extract outputs from its Claude models and train cheaper rival systems, a practice known as distillation. He named Moonshot AI's Kimi K3 model as an example of technology he believes was built this way, describing an organized effort to evade Anthropic's account and access controls at scale.
OpenAI's ChatGPT, xAI's Grok, and Anthropic's Claude all began experiencing service disruptions within roughly a two-hour window on the same day. Users reported errors with chatbot conversations, logins, file uploads, voice mode, and other features, while Anthropic attributed its partial outage to an infrastructure issue and xAI said it was working to restore service. None of the companies have confirmed whether the outages are connected.
Anthropic confirmed an outage affecting multiple Claude models starting around 9:41 AM ET on September 3, 2026. Users of Mythos/Fable 5.1, Mythos/Fable 5, Opus 5, Opus 4.8, and Opus 4.6 experienced elevated errors and failed requests. Anthropic identified the cause and said it was working on a fix, with the issue still unresolved as of 10:49 AM ET.
Zeke Hausfather, a climate scientist who relies on AI for research, spent eight weeks tracking 1,138 prompts he sent to Claude Code to estimate the electricity consumed at the data centers processing them. His findings suggest that AI agents, which perform multi-step autonomous tasks, draw significantly more power than the simple chatbot queries tech companies typically cite as low-energy examples.
Anthropic has launched a developer blueprint that provides pre-built harnesses, patterns and guardrails for creating AI shopping and merchant agents using Claude. The kit includes reference implementations for retail, travel, telecom and ticketing use cases, plus a Claude Code plugin, and deploys across Claude API, Amazon Bedrock, Microsoft Foundry and Google Cloud Vertex AI. Partners such as Accenture, Mastercard and Visa are collaborating to help merchants adopt the framework ahead of the holiday shopping season.
Anthropic has updated Claude so it can perform computer-use tasks in the background while users keep working on the same machine. If Claude must take over the screen entirely, it asks permission once per session and waits until the user stops typing before grabbing keyboard control. The feature is in beta for Pro and Max subscribers on the Mac Claude app, enabled via Settings > General > Computer use.
Anthropic has released a web page at claude.com/check-content that lets users upload files to see if Claude was involved in creating them, using embedded content credentials under the C2PA standard. The checker currently supports only multimedia formats like JPEGs, GIFs, MP3s and MOVs, not text documents. A separate text-detection API exists but remains in private preview for select organizations.
Anthropic has rolled out background computer use for Claude on macOS, available to Pro and Max subscribers through Claude Code and Claude Cowork. The feature lets Claude click, type, and operate applications on a user's desktop without taking over the visible cursor, so people can keep working on something else while it runs.