In a market where usage is often driven by VC subsidies or CIO mandates, metrics are misleading. The true test of a durable AI company is whether its product transitions from an interesting novelty to an indispensable daily necessity for its users. Investors should focus on this behavioral shift, not top-line growth.

Users are abandoning established tools like Canva for more efficient, agentic alternatives but are slow to cancel subscriptions. This 'stealth churn,' where usage drops to zero while payment continues, is a critical warning sign. B2B companies must now treat DAU/WAU as a primary health metric to avoid being blindsided.

In the current climate, ARR is often a misleading metric, easily inflated by optimized TikTok funnels. Investors should look past this "low caloric" revenue and focus on fundamental indicators of a durable business: high user retention and organic, word-of-mouth growth.

In hyper-growth AI companies with annual contracts, renewal data is a lagging indicator. VCs scrutinize user engagement as the most critical leading indicator of future retention, as a large part of the customer base has not yet faced a renewal cycle.

Since today's AI companies grow too fast to have multi-year renewal data, investors must adapt their diligence. The focus shifts from long-term retention to short-cycle retention and, crucially, deep product engagement. High usage is the best leading indicator of future stickiness and value.

For ChatGPT, the true sign of durable value is whether users return after three months. This focus on long-term retention dictates product decisions, with the core belief that revenue is a byproduct of solving user problems, not a direct optimization target.

The team stopped using Notion for standups after their custom AI agent began serving the same purpose more efficiently. They didn't consciously cancel the subscription, but their daily active usage dropped to zero—a "stealth churn" that usage metrics, not just billing, can reveal.

Lin warns that much of today's AI revenue is 'experimental,' where customers test solutions without long-term commitment. He calls annualizing this pilot revenue 'a joke.' He advises founders to prioritize slower, high-quality, high-retention revenue over fast, low-quality growth that will eventually churn.

The current AI hype cycle can create misleading top-of-funnel metrics. The only companies that will survive are those demonstrating strong, above-benchmark user and revenue retention. It has become the ultimate litmus test for whether a product provides real, lasting value beyond the initial curiosity.