Jev takes over yes/no decisions in the agent loop, Opus only plans and writes code

CyrilXBT @cyrilXBTOriginally posted 2026.10.13

Open original on X

most people will read this and think it’s about a cheaper model it’s not. it’s about which questions deserve a model at all → “which tier takes this?” doesn’t need Opus → “is this command safe?” doesn’t need Opus → “is it done?” doesn’t need Opus that’s most of your agent loop. Opus plans and writes the code. Jev answers everything else for $0.042 per million tokens.

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