Library

Cheap-then-deep routing: Haiku 4.5 first, Opus 4.7 only when it earns it

Route every call to Haiku 4.5 first. Ask it one thing: can you answer this with high confidence? If yes, ship its answer. If no, replay the same request to Opus 4.7. You pay premium tokens only on the hard 10–20%. Net cost drops ~70% with no quality loss on easy traffic.