Anthropic Takes xAI Colossus Compute, Shivon Zillis in OpenAI Trial, Kalshi’s $22B Valuation

xAI’s decision to lease its Colossus data center capacity to Anthropic signals a strategic pivot, likely driven by the underperformance of xAI’s Grok model and a need to offset massive infrastructure costs. Meanwhile, the ongoing legal battle between Elon Musk and OpenAI continues, with Shivon Zilis’s testimony revealing that Musk previously considered absorbing OpenAI into Tesla. In the prediction market sector, Kalshi has secured significant funding at a $22 billion valuation, intensifying its rivalry with Polymarket. Polymarket faces operational hurdles and regulatory scrutiny, particularly regarding its U.S. entity’s leadership and the broader legal landscape for prediction markets. These developments highlight the intense competition for compute resources and the volatile regulatory environment surrounding emerging AI and financial technologies.