VC portfolio reviews accelerate as AI shifts deal valuations

Venture capital has long operated on the premise that a thesis—the fundamental investment hypothesis behind a deal—remains valid for years. But the headline premise of this article is that AI development has fundamentally altered that rhythm. The body indicates that deals struck in 2024 are already being re-evaluated against a 2026 backdrop, compressing the window for strategic coherence.

This shift creates a practical problem for VC portfolios: a company funded at a certain valuation on the belief that it addresses a specific market need or technical gap may find that thesis undermined within months if a new AI model, capability, or competitor emerges. The article's framing—that 2024's 'great deals' look like 'clear mistakes' by 2026—suggests not merely that performance is disappointing, but that the underlying logic for the investment has been overtaken. This forces VCs to move from a passive hold-and-grow model toward active, more frequent reassessment of each company's durable competitive advantage in an AI-shifting landscape.