Claude, ChatGPT/Codex, and Grok suffered a widespread outage on September 3, 2026 with elevated errors confirmed by OpenAI, Anthropic, and xAI. Services began recovering after about 30 minutes though Grok lagged, coinciding with OpenAI teasing its GPT-6 Astra launch.

The incident occurred while OpenAI is rumored to share news around the launch of its next big model, called Astra, as soon as today.
The incident highlights the shared infrastructure dependencies across major AI providers.
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OpenAI announced that its Astra model is the first to reach the company’s critical cyber threshold by independently locating and exploiting unknown vulnerabilities in live software. A public version is slated for release soon, but advanced capabilities will initially be available only to Daybreak Blue partners while new guardrails and a misalignment monitor are deployed.
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