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agent cost stack
also AI agent cost stack or agentic cost stack
Definition of agent cost stack
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: a layer-by-layer breakdown of the total cost of building and operating an AI agent, extending beyond model tokens to expenses such as context and memory, retrieval, tool calls, orchestration, infrastructure, retries, monitoring, governance, and human review
- The procurement team used an agent cost stack to estimate the workflow's real operating expense before approving deployment.
- Tokens were the smallest line in the agent cost stack once failed tool calls and human review were included.
Origin & history
The phrase was being used in practitioner and industry material by 2025 as organizations tried to budget for production agents whose costs extend beyond a single model call. It became more visible in 2026 as enterprise discussions shifted from token prices to the full economics of long-running, tool-using workflows.
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Cite this entry
"Agent cost stack." AI Dictionary, Dadgogo, https://dadgogo.com/dictionary/agent-cost-stack/. Accessed 11 Oct. 2026.