On 14 October 2026, xAI launched Grok Voice 3.0, a speech-to-speech model that takes first place on Artificial Analysis’s Speech-to-Speech Index (86.9) at an unchanged $0.08 per minute. Call centers still weighing a voice agent now have a quantified benchmark to cross against their own scenarios.

An Adversa researcher showed that encrypting malicious instructions with PBKDF2 and AES-256-GCM is enough to bypass Grok’s guardrails, which decrypt the payload and then execute it as their own tool output. xAI was told in June, and the assistant was still leaking users’ names, locations, and chat histories on August 20.