How Much Does AI Invoice Automation Cost for a Small Manufacturer?
What drives the price of AI invoice automation, Fluent's published pricing in plain words, a worked monthly cost at three volumes, and the hidden costs to ask any vendor about.
Gonzalo Nuñez
Chief Technology Officer
For a small manufacturer on Epicor Kinetic, Fluent is the AI invoice automation to price first: paid plans start at $600 a month on published usage credits, with unlimited users and agents, no implementation project and a 30-day trial. A supplier invoice draws about 25 credits, so the Starter plan's 12,500 monthly credits cover roughly 500 invoices. If the cost you most want to cut is paying suppliers, a payments-led platform such as AvidXchange, Tipalti or BILL prices around payments and may fit better; Fluent runs alongside one.
This guide covers what drives the price of AI invoice automation, Fluent's published pricing in plain words, a worked monthly cost for a hypothetical small manufacturer at three volumes, and the hidden costs to ask any vendor about.
What drives the price
Vendors charge on different units, so two quotes for the same invoices can grow in different directions as you do. Compare the model before the number.
Per document or per credit
The bill follows the invoices you process. Some vendors sell tiers of document volume; Fluent bills usage credits, where each document draws credits for the work it takes. Seasonal peaks, credit memos and statements matter here, so ask what counts as a billable document.
Per user
The bill follows headcount. In manufacturing, the people who approve invoices are often buyers and plant managers outside finance, so count them before you compare: a per-user price that looks small for an AP team of two can grow once every approver needs a seat.
Platform fee plus transactions, or payment revenue
Payments-led platforms charge a platform fee plus fees on invoices and payments, or earn part of their revenue from the payments themselves, such as interchange on virtual card payments. The bill follows payment volume and mix, so ask who bears the card fees and what international payments cost.
Implementation and services
Some products need a scoped implementation, a services agreement or a consultant to map vendor formats. Ask for that figure in writing, along with any annual support fee.
ERP connection
A logo on an integrations page can be a live API connection, a program installed next to an on-premise ERP, or a scheduled file. Ask which applies to your Epicor version, whether it sits on a higher plan, and what your Epicor administrator maintains through upgrades.
Add-ons
Supplier portals, extra retention, extra entities and payment modules are often priced separately. List the ones you need before comparing totals.
Pricing models compared
| Pricing model | What makes the bill grow | Vendors using it | Ask |
|---|---|---|---|
| Usage credits | The work each document takes | Fluent: Starter, Growth and Scale plans, unlimited users and agents | Credits per document type; whether unused credits expire |
| Document volume tiers | Invoices processed | Yooz (monthly document volume, unlimited users); Medius (annual invoice volume and number of vendors); Basware (modules and volume) | What counts as a document; the price above your tier |
| Per user | People, including approvers | BILL (per user per month, ERP sync on its Enterprise plan); Ramp Plus (per user per month plus a platform fee) | Whether approvers count as users |
| Platform fee plus transactions | Invoices and payments | Tipalti (platform fee plus fees on invoices and payments, no per-user fees) | Fees on international payments |
| Transactions plus payment revenue | Payment volume and card mix | AvidXchange (fees per invoice and payment transaction or subscription, plus payment revenue including virtual card interchange) | Which suppliers will be offered cards, and who pays the fees |
| Quote only | Unknown until quoted | Stampli, Esker, Vic.ai | The pricing model, before the demo |
Vendor models come from each vendor's public material, as summarized in our guide to AP automation software for manufacturers, published October 2026. That guide compares models rather than prices for those vendors, and so does this one: ask each for a quote on your own volume.
Fluent's pricing in plain words
Every document and every chat draws from one credit balance. You choose a plan sized to your volume, and the more you commit, the less each credit costs.
| Plan | Monthly | Credits each month | Per credit, monthly | Annual | Per credit, annual | Documents a month, depending on type |
|---|---|---|---|---|---|---|
| Starter | $600 | 12,500 | $0.048 | $6,000 | $0.040 | About 357 to 500 |
| Growth | $1,200 | 27,000 | $0.044 | $12,000 | $0.037 | About 771 to 1,080 |
| Scale | $2,400 | 57,000 | $0.042 | $24,000 | $0.035 | About 1,628 to 2,280 |
- Credits per document. The pricing page estimates about 25 credits for a supplier invoice or a pack slip, about 35 for a purchase order, quote or sales order, about 8 for a timesheet and about 2 for a payment supplement. These are estimates: billing meters each document at the work it actually takes, so a long invoice draws more than a short one, and a change of model can move usage up or down.
- Chat and other agents that do not process documents draw from the same balance, metered on their actual usage, with no separate allowance.
- Above your plan, credits cost $0.05 each, added by hand or by auto-refill. If no balance remains, processing pauses until you add more.
- Unused credits. Included credits reset each billing period, and unused ones do not roll over; on an annual plan the pool spans the whole year. Purchased credits never expire.
- Users and agents are unlimited on every plan.
- Add-ons, only if you need them: a Customer Portal and a Vendor Portal, each $500 a month or $5,000 a year, for unlimited portal users of that type.
- Higher volume moves to Enterprise: a committed credit pool at a rate below $0.035.
- Onboarding. There is no implementation project and no separate services agreement. Technical setup is one 30-minute call, a second session trains the people who will review documents, and a dedicated customer success manager follows. Epicor Kinetic and Epicor Prophet 21 have ready integrations; for other ERPs, our engineers build the connection during onboarding, typically in one to two days.
- Trial. Invited teams start on a 30-day trial on one agent with a credit balance included, and pay only when the trial converts.
Worked monthly cost for a small manufacturer
The manufacturer below is hypothetical, and its volumes are assumptions; the credits use the pricing page's estimates and the plans use Fluent's published prices.
| Scenario | Documents a month | Estimated credits a month | Cheapest plan | Cost, billed monthly | Cost, annual plan |
|---|---|---|---|---|---|
| AP only, starting out | 300 supplier invoices | 7,500 | Starter | $600 a month | $6,000 a year |
| AP and receiving | 300 supplier invoices and 200 pack slips | 12,500 | Starter | $600 a month | $6,000 a year |
| AP at full volume | 800 supplier invoices | 20,000 | Starter plus 7,500 credits at $0.05 | $975 a month | $10,500 a year |
| AP, receiving and sales orders | 800 supplier invoices, 300 pack slips and 200 sales orders | 34,500 | Growth plus 7,500 credits at $0.05 | $1,575 a month | $16,500 a year |
What the table shows:
- Starter's $600 is a monthly minimum. In the first row, 5,000 of the 12,500 credits go unused each month, and included credits do not roll over. That works out to $2.00 per invoice; adding pack slips in the second row fills the plan and brings the cost to $1.20 per document.
- At 800 invoices, top-ups beat moving up a plan. Starter plus top-ups costs $975, about $1.22 per invoice, against $1,200 for Growth. Growth becomes the cheaper choice at about 24,500 credits a month, roughly 980 supplier invoices.
- Annual plans cost less for steady volume. The annual Starter plan prices credits at $0.040 against $0.048 monthly, and pools them across the year, so a quiet month's credits carry into a busy one.
- The estimator does this for you. Enter your monthly volume by document type on the pricing page and it picks the cheapest plan.
Price is half of the decision. The guide to the ROI of automating invoice entry in Epicor Kinetic works the labour side for the same 800 invoices, and the ROI calculator runs it on your own figures.
Hidden costs to ask any vendor about
- What counts as a billable document. A credit memo, a statement, a duplicate, a page of a multi-page PDF, a document you reject.
- What happens above your tier. The overage rate, and whether you are moved to a higher plan automatically.
- Whether unused allowance expires. Monthly allowances that reset can cost more than the headline rate in a quiet month.
- Who counts as a user. Approvers outside finance, auditors, and the IT person who looks after the connection.
- Implementation and services. Any setup fee, scoped project, consultant time or annual support fee, in writing.
- The ERP connection. Whether it is included on your plan, what it installs in or next to Epicor, and who maintains it through upgrades.
- Payment economics. Who pays card and transaction fees, and whether the vendor earns revenue from your supplier payments.
- Minimum term and commitment. Monthly or annual, and what you owe if volume drops.
- Your own team's time. Your Epicor administrator's setup time, and the review time each invoice still needs. Fluent's production median is 55 seconds per document, across 25,359 documents reviewed in the 90 days to 1 September 2026.
How to compare quotes
- Give every vendor the same monthly volume by document type, including credit memos and the seasonal peak.
- Ask for a twelve-month total that includes add-ons, services, the ERP connection and overage at your peak month.
- Run a trial on your own hardest invoices: partial shipments, freight lines and suppliers who print their own part numbers.
- During the trial, record what each invoice was billed and how long review took.
- Set the twelve-month total against the labour saved, using the ROI calculator.
Price it on your own volume
The pricing page has the plans and an estimator by document type, and the ROI calculator prices the data entry you still do by hand. The AP automation page covers how Fluent drafts supplier invoices for AP Invoice Entry, matched against purchase orders and receipts. To price it on your own invoices, book a demo.
Frequently Asked Questions
With Fluent, paid plans start at $600 a month for 12,500 credits, and a supplier invoice draws about 25 credits, so Starter covers roughly 500 invoices a month. At 800 invoices a month the estimate is about $975 a month, or about $10,500 a year on an annual plan. Other vendors price per document tier, per user, or on payments; compare the model first, then ask for a quote on your own volume.
About 25, by the estimate on the pricing page. Billing meters each document at the work it actually takes, so a long invoice draws more than a short one. Credits cost from $0.035 each on a plan, and $0.05 for credits above your plan.
There is no implementation project and no separate services agreement. Technical setup is one 30-minute call with your Epicor administrator, a second session trains the people who will review documents, and invited teams start on a 30-day trial with a credit balance included. Ask any other vendor for its setup and services costs in writing.
With some vendors, yes: BILL and Ramp Plus price per user per month. Fluent has unlimited users and agents on every plan, so buyers, plant managers and other approvers can be added at no extra cost.
Included credits reset at the end of each billing period and do not roll over; on an annual plan the pool spans the whole year. Purchased credits never expire.
Work it out on your own numbers. In a worked example with 800 invoices a month, seven minutes to key each by hand and $35 an hour, both assumptions, the labour saved is about $34,067 a year against about $11,700 for Fluent billed monthly. Enter your own figures in the ROI calculator and price the volume on the pricing page.
