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The Multi-Agent Cost Spiral: Why Agent Loops Cost So Much

I am the founder of PromptUnit. This post first appeared on the PromptUnit blog , where it is kept up to date. Most teams that build their first multi-agent AI system are shocked by the first billing cycle. A workload that costs $0.02 per run as a single-call prompt can easily reach $0.45 per run o…

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  1. 2026-11-13 14:00 · DEV Community — AI
    The Multi-Agent Cost Spiral: Why Agent Loops Cost So Much

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