Anthropic launched Claude Sonnet 5 with stronger agent features and lower pricing, aiming to make autonomous AI workflows cheaper to deploy.

OKX says it is opening a developer marketplace for AI agents that can discover services, hire one another, and settle payments with stablecoins using blockchain-based identity and reputation tools. The move extends the crypto exchange beyond trading and places it in a fast-forming market for agent infrastructure, where payments, trust, and dispute resolution remain unresolved problems.

Omen AI has raised a $31 million Series A to expand a sensor system that monitors the health of liquid cooling fluids in data centers, aiming to catch bacterial contamination and component wear before they force expensive rack shutdowns. The startup is repositioning from heavy equipment fluid monitoring into AI infrastructure at a moment when hotter, denser GPU deployments are making cooling reliability a larger operational risk.

Arena, the Berkeley-born startup behind one of the most widely watched crowdsourced AI model leaderboards, told TechCrunch it has reached $100 million in annualized run-rate revenue roughly eight months after launching its commercial evaluation product. The milestone suggests that AI benchmarking and post-training feedback are becoming a business in their own right, not just a research exercise, though the company says its revenue is consumption-based rather than contracted recurring ARR.