Grok

2 items

Models

ChatGPT, Claude, Grok, and Gemini all had trouble inside the same two hours on September 3

On September 3, 2026, Anthropic logged elevated errors across Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5, OpenAI logged elevated errors across ChatGPT and Codex, Grok showed users an error message, and third-party monitors recorded a likely Gemini API interruption. Four independent providers, one morning. No status page names a shared cause, and Amazon Web Services, Microsoft Azure, and Cloudflare reported nothing major. For anyone whose product calls more than one of these, this is the failure mode that a second provider does not fix.

Ars TechnicaSeptember 4verified

The xAI and Grok logos on a phone screen.

Agents

Encrypting the instruction walks it straight past the guardrail

Researchers at Adversa hid a prompt injection as ciphertext with the key next to it. Grok decrypted it in its own sandbox and sent the user's name, location, and chat history to an attacker's server, without a warning and without asking.

Ars TechnicaAugust 21verified