One proposal charges per employee, another sells credits, and a third quotes a platform fee plus model usage. Procurement asks which is cheaper, but the offers describe different work: a low seat price can hide expensive usage, and a high platform fee can include services another proposal bills apart.

Compare the cost of a defined month of accepted work. Keep the vendor’s meter visible, then translate it into your workload. Hold off on a blended price until you know how overages, failed attempts, and options behave.

Firsthand API billing questions show confusion about account balances and limits. Request examples of how a bill and a limit interact, and do not assume the dashboard’s largest number is the remaining allowance.

Define one comparison basket#

Choose a normal month and a busy month. Each basket includes active people, unattended tasks, average input size, expected retries, required connectors, and human review. Add a quiet month if demand is seasonal, when a minimum commitment can outweigh unit price.

For a hypothetical team, the normal basket is twenty users and 4,000 accepted case summaries and the busy basket is the same users and 12,000 summaries after a seasonal spike. This tests whether a seat-based quote stays stable and whether unattended activity draws a separate allowance.

Do not assume one summary is one billable task. Ask whether a failed attempt counts, whether a resumed task counts twice, and whether a parent task with several helpers creates several units. Have the seller price your example under the contract definitions.

Keep the commercial layers separate#

Layer	Question for the proposal
Access	Which people or service identities need a paid entitlement?
Consumption	What event consumes a token, credit, task, or action?
Included allowance	Does unused capacity expire or roll over?
Overage	What rate applies, and who authorizes additional spend?
External charges	Which model, tool, storage, and compute bills remain yours?
Services	What implementation and support work is included?
Exit	What costs apply to export, transition, and deletion?

A credit needs a conversion rule. If models or tools consume different credit amounts, request a dated schedule and the process for changing it; without them, a credit count cannot predict a task's cost.

A per-task price needs an acceptance definition. If the vendor charges for attempted tasks, call it that in your comparison. If it charges for completed tasks, ask what happens when a person rejects the output or the destination system never receives it, so commercial vocabulary does not redefine your quality standard.

Work a simple comparison#

Offer A costs $1,000 monthly plus $0.20 per attempted task. Offer B costs $1,600 with 5,000 attempts included and $0.35 for each additional attempt.

At 4,000 attempts, A costs $1,800 and B $1,600.
At 12,000 attempts, A costs $3,400 and B $4,050.

Now assume 20% of tasks need one more attempt: 4,000 desired outputs then take 4,800 attempts, and the comparison changes again. If one system needs fewer retries or much less review, its labor savings can outweigh the subscription difference. Record charges and human effort separately.

The cheapest offer can also lack a required control or deployment arrangement. Treat those requirements as pass-or-fail conditions before ranking price; a cheaper service that cannot process the intended data is no improvement.

Ask for the awkward invoice#

Request a sample invoice for a month with a mid-month user change, a failed batch, an overage, and a credit. Check whether finance can reconcile line items to exportable activity; a price that is hard to explain creates recurring administrative work.

For Deixic, begin with the published plans and confirm enterprise terms through procurement. Keep any existing agent subscription and model-provider bill in the comparison, and assess using your existing agent as its own purchase path.

End with a one-page comparison of the workload baskets, assumptions, excluded costs, and the event that would make each offer expensive.