AI Weekly Briefing: OpenAI’s $122B Round Changes AI

OpenAI just closed a $122 billion funding round at an $852 billion valuation, Anthropic is fighting the Pentagon in court, and a leaked Claude Mythos briefing warned of unprecedented cybersecurity risk. If you want the clearest signal on where AI power is concentrating, this week’s roundup has it. You get the numbers behind OpenAI’s record raise, including Amazon’s reported $50 billion commitment, SoftBank and NVIDIA’s $30 billion stakes, and why the structure looks less like ordinary private fundraising and more like early IPO prep. There’s also the harder business reality underneath the hype: $2 billion in monthly revenue, 900 million weekly ChatGPT users, more than 50 million paid subscribers, and still no profitability expected until 2030. From there, the episode digs into the DOJ appeal in Anthropic’s Pentagon case and why Judge Rita Lin’s First Amendment ruling could become a real precedent for AI procurement and responsible-use limits.  It also unpacks the Claude Mythos leak, where Anthropic’s own documents described a model capable of chaining vulnerabilities into exploits and adapting when defences fail. Beyond that, you get Salesforce turning Slackbot into an enterprise agent with 30-plus capabilities and MCP connectivity across 2,600 apps, Microsoft launching MAI transcription, voice and image models as a clear OpenAI hedge, plus quick takes on Gemma 4’s Apache 2.0 release, OpenAI’s TBPN acquisition, California’s new AI procurement order, venture capital concentration, and the rise of AI brain fry at work.