
Welcome back! Elon Musk took the stand in California yesterday and admitted under oath that xAI trained Grok by distilling OpenAI's models, the very practice xAI's own terms of service would prohibit a competitor from doing to it. On the same day, OpenAI opened access to its strongest models for cybersecurity defenders and Anthropic moved Claude Opus 4.7 into a public-beta security product.
In today’s Generative AI Newsletter:
Musk on the stand: Did xAI use OpenAI's own models to build Grok, and does it matter?
OpenAI cyber: What changes when OpenAI opens its strongest models to security teams and governments?
Anthropic security: Can Claude Opus 4.7 really find the bugs your security team keeps missing?
The $700B bill: How long can Big Tech keep raising the AI capex number before investors let go?

