OpenAI Pauses Stargate UK Data Centre Over Energy Costs; ChatGPT Health Reaches 40 Million Daily Users

OpenAI paused its multi-billion pound Stargate UK data centre project — including a large facility in North England — citing high energy costs and regulatory concerns, a move being interpreted by UK developers and policymakers as a warning signal about the country's AI infrastructure environment. Separately, OpenAI data published by Axios reveals over 40 million people use ChatGPT daily for medical information, making health one of its top consumer use cases; The Atlantic raised concerns about AI health advice risks, particularly around health anxiety, without formal regulation. Code discovered in OpenAI's Ads Manager also suggests the company is building conversion tracking directly into ChatGPT, signaling a push into performance marketing. Earlier this week, OpenAI announced a $100/month ChatGPT Pro plan with unlimited GPT-5.4 access and integrations with Outlook shared mailboxes and Apple CarPlay.