What costs should I include for an AI agent?

Include implementation cost, recurring AI and software cost, retry or exception overhead, and the human-review time that remains after automation.

What is a good AI agent payback period?

There is no universal threshold. Compare payback with project risk, contract length, workflow stability and how confident you are in the benefit assumptions.

Does this calculator guarantee savings?

No. It is a planning model based only on the assumptions entered. Validate with real workflow data before committing spend.

// Stratum Praxis · Free decision tool · 2026

AI Agent Cost & ROI Calculator

Before approving another agent, model the part most ROI calculators miss: the work the agent does not handle, human-review overhead, recurring run cost and the implementation bill.

Run the free calculation Open the spend decision hub

Planning model only. No guaranteed savings or financial, accounting, legal, procurement or security advice.

Model one workflow

Use your real operating assumptions, not generic AI promises.

Tasks per month

Human minutes per task today

Loaded human hourly cost ($)

Agent handles end-to-end (%)

Human review on handled tasks (%)

Review minutes when required

AI + software run cost / month ($)

One-time implementation cost ($)

Retry / exception cost buffer (%)

Benefit confidence haircut (%)

The confidence haircut deliberately reduces modeled labor savings. Use it when automation rate, adoption, workflow volume or quality is uncertain.

Gross labor value / mo—

Human review cost / mo—

Risk-adjusted benefit / mo—

Effective run cost / mo—

Net value / mo—

Payback—

First-year ROI—

3-year net value—

Decision signal—

—

Build the full decision case — $39 Need independent review? $499

Why model this now

Cheaper tokens do not automatically mean cheaper agentic workflows.

Gartner said in August 2026 that inference cost per agentic workflow could rise more than fivefold through 2028 as multistep reasoning consumes more compute, even while unit token economics improve. The practical consequence is simple: model recurring operating cost and human oversight before using an agent as a cost-saving story.

Industry context: Gartner, Aug. 17, 2026. This calculator is independent and is not affiliated with Gartner.

Risk-adjusted monthly benefit = gross labor value − human review cost, then reduced by your confidence haircut.
Effective monthly run cost = stated run cost × (1 + retry/exception buffer).
First-year ROI = (12-month net operating value − implementation cost) ÷ (implementation cost + 12-month effective run cost).

Translate the math into a buying decision

The calculator is the filter. The decision system is what prevents renewal drift.

GO

Payback is short, first-year ROI stays positive after a confidence haircut, and the workflow is stable enough to measure.

PILOT

The economics may work, but uncertainty is still too high. Validate volume, automation rate, quality and review burden on a bounded workflow.

REVIEW

Value is close to cost. Challenge plan size, tooling overlap, implementation scope and whether a simpler workflow change beats an agent.

STOP / REDESIGN

Net monthly value is negative or payback is too long for the risk. Do not automate merely because the capability exists.

See the $39 decision system Start with the free spend checklist

FAQ

Keep the assumptions auditable.

What should count as run cost?

Model/API usage, orchestration, automation software, hosting, monitoring and other recurring tooling directly required by the workflow.

Why include human review?

An agent can handle part of a task while still creating a review queue. Ignoring that queue overstates the value returned to the business.

Why apply a confidence haircut?

Early pilots often use optimistic assumptions. A haircut creates a conservative scenario before money is committed.

Does positive ROI mean “buy”?

No. Security, reliability, data handling, workflow stability and strategic fit can still make a positive-looking project a bad decision.