A cheap agent loop with Jev as the decider and Grok 4.7 as the worker
The author breaks down costs: Jev charges $0.00013 per routing decision while Grok 4.7 does the work, so 3,000 decisions a day costs 39 cents, and lists the four kinds of judgment Jev handles.
How to build the cheapest agent loop that still ships: Grok 4.7 as the worker, Jev as the decider. One routing decision: Jev - $0.00013 Grok 4.7 - $0.0069 Frontier - $0.0375 3,000 decisions a day: 39 cents vs $20.70 vs $112.50. Same work in every column. The 4 seats Jev sits in: route every step, judge every tool call, gate the finish, hand up on low confidence. The walls that are not models: request cap, spend math in Python, compaction, pinned versions. Grok 4.7 is not the frontier (46 vs 53). That is the point. Hard steps route up. Never pay a writer to make a decision. Save this. Article's below.
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