Every team running AI agents makes the same two mistakes. They trust a model because it scored well on a benchmark that doesn't match their workload. Then they discover the model's actual behavior in production, with real users.
Models have behavioral signatures — consistent patterns in how they respond under pressure, across task types, and over extended interaction. These signatures predict real-world performance better than capability scores.
There's no standard way to understand a model's behavioral profile before deploying it. Capability benchmarks measure the ceiling. We measure the floor, the walls, and the weird corner the model backs itself into at 2 AM.