Tab emerges at a $300M valuation, with a private beta

Tab emerged from stealth at a $300 million valuation, TechCrunch reports; the funding amount remains undisclosed. Its product site describes a private beta in which users message an assistant that operates its own browser and computer, makes calls and handles connected accounts. Tab says users see the recipient, total and purchase before approving payment—a product promise that still needs testing in real workflows. Operators should assess that approval boundary and completed tasks before treating valuation as capability evidence, extending our Ghost Core analysis of the acceptance test for personal agents.