Google’s AI Data Center Expansion, OpenAI’s Legal Win, and Cheaper Medical AI Benchmarking | UpNext AI – May 19, 2026

Google is reportedly deepening its AI infrastructure push through a partnership tied to a Blackstone-backed cloud group and a planned $5 billion investment expected to bring 500 megawatts of new data center capacity online next year. The story highlights how the frontier AI race is increasingly constrained not just by models, but by physical infrastructure: power, chips, and large-scale compute deployment.  Meanwhile, Elon Musk lost his lawsuit against OpenAI after a jury unanimously concluded he waited too long to bring the case. Ars Technica reports the suit accused OpenAI and Sam Altman of abandoning the organization’s original nonprofit mission, but the court ruled the claims fell outside the statute of limitations. Musk plans to appeal.In research, we examine a new paper in npj Digital Medicine exploring adaptive testing methods for evaluating large language models in healthcare. The researchers found they could preserve benchmark rankings while dramatically reducing evaluation cost, runtime, and token usage—potentially making continuous evaluation much more practical for regulated AI systems.In the headlines: Forbes examines the benefits and risks of AI-powered cybersecurity systems, and Anthropic’s reported acquisition of Stainless points to a growing battle over AI infrastructure tooling and developer ecosystem control.SourcesFinancial Times – Google AI infrastructure expansion https://www.ft.com/content/5730b605-8fb2-4973-a188-b4a587ce3580Ars Technica – Elon Musk loses OpenAI lawsuit https://arstechnica.com/tech-policy/2026/05/elon-musk-loses-trial-accusing-sam-altman-openai-of-stealing-a-charity/Nature – Adaptive LLM evaluation in healthcare https://www.nature.com/articles/s41746-026-02671-wForbes – AI cybersecurity risks and benefits https://www.forbes.com/sites/chuckbrooks/2026/05/18/5-benefits-and-risks-of-using-ai-for-cybersecurity/Forbes – Anthropic and Stainless https://www.forbes.com/sites/sandycarter/2026/05/18/anthropic-buys-stainless-to-cut-off-openai-and-google-sdk-access/