32-second explainer about routing decisions between models

i don't get why we're still using one model for every decision Claude Opus 5.5 is out, and the expensive brain got cheaper overnight. Typical workloads cost 40% less than with Opus 5, while output is over 30% faster the new bill: > $4 / 1M input tokens > $20 / 1M output tokens > $0.20 / 1M cached reads, down 60% Jev launched seven days earlier. one request becomes a chain of decisions once an agent starts acting. Opus handles the messy goal. Jev returns typed choices with confidence for the branches that keep coming up take a booking agent: > Opus 5.5 → understand “find the earliest slot after 2pm” > Jev → choose BOOK_SLOT, ASK_USER or STOP > code → check the time, run the action and verify the booking Jev costs $0.042 per million input tokens, with free output. against Opus 5.5’s $4 input rate, that’s a 95× difference per input token that cheaper layer has 3 outputs: Choice picks an action, Score measures a defined scale, and Noul estimates the probability of yes the 32-second video follows: CONTEXT → PARSE → REASON → CODE → VERIFY → RESULT set up Jev from the guide below and try this Opus 5.5 split today ↓

— Mika (@mika_systems) Sep 22, 2026