Principles / The Intelligence Cascade
§ Principle 12 of 23
The Intelligence Cascade
Model intelligence flows from frontier to medium to small. Today's frontier capability becomes tomorrow's mid-tier default.
The Intelligence Cascade describes the predictable flow of AI capability down the model hierarchy. Capabilities that are exclusive to frontier models today will be available in mid-tier models in 12-18 months and in small, local models in 24-36 months. This cascade has profound implications for system architecture: systems designed exclusively for frontier models are over-built (they're paying premium prices for capabilities that will soon be available cheaper), while systems designed exclusively for small models are under-utilized (they're not positioned to take advantage of capabilities flowing down to their tier).
Why it matters
The Intelligence Cascade means that Intelligent Routing becomes more powerful over time. As small models gain capabilities, more tasks can be routed to cheaper tiers without quality loss. Organizations that build for the cascade — with routing logic that regularly re-evaluates model capabilities — will see their costs decrease automatically as intelligence cascades downward.
In practice
Every quarter, benchmark your task types against the latest models across tiers. Tasks that required a frontier model last quarter may now perform just as well on a mid-tier model at 1/10th the cost. Update your routing rules accordingly.