Silicon Valley is buzzing with concerns about excessive spending on AI . Executives at the startup Foyer aren't worried — they have a simple budget-saving tactic. On the surface, Foyer, which makes an AI browser tool and an AI companion app, might seem like a poster child for running up AI costs . The company experiments liberally with AI, its CEO, Pratyush Rai, told Business Insider. Finance and marketing employees vibe code internal tools, while the startup's developers try the newest