Why it matters
It puts numbers on the static-configuration trap, where hardcoded frontier defaults charge architecture-rewrite prices for regex questions. The team reports cutting its monthly model bill 57% after moving ~60% of query volume to a cheap tier.
Tokenmaxxing read
The useful part is the failure mode, not the savings. A terse question about a subtle segfault reads as cheap to a router and gets downgraded twice running, so their fix is behavioral: a #heavy escape hatch, plus an automatic tier bump when a follow-up lands within 45 seconds.
Source takeaway
Vendor-authored, so read the 57% and the 0.01 quality delta as self-reported: the benchmark is 28 internal tasks scored on lexical token overlap, and the model names in the piece are stale. The router design still transfers.
