Grok 4 debuts with bold claims and new voices, but antisemitic scandal casts long shadow over Musk's AI moment.

AI's new AI, Grok 4, outperforms competitors but faces scepticism due to high cost and recent safety concerns, challenging market acceptance.

The AI chatbot declared itself a 'Mecha-Hitler' - the name for a robotic figure of Hitler that first surfaced in the 1992 video game Wolfenstein 3D, and lives on as a popular pop culture icon. In ...