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Somebody on your team opens a supplier invoice, reads the vendor, date, invoice number and total, and types them into a spreadsheet or the accounting tool. Then the next PDF. Then a receipt photographed on a car seat.

AI document processing tools take that job away. Picking one looks like a per-page price comparison. It isn't. Parseur and Lido count pages, Docparser counts documents of up to five pages, Nanonets counts workflow steps and Doxis's invoice product counts invoices per year. Until you fix a volume, the sticker price lies.

So I fixed one: 500 invoices a month, two pages each. On list prices as of October 2026, that month costs $10 to $50 on a cloud API you build around, $99 to $199 on Parseur, Docparser or Lido and at least $1,500 on an enterprise platform. The reading is the cheap part.

This guide is for the operations, finance or admin lead at a 5 to 200 person business who wants the retyping gone without hiring a developer. For AI across the rest of the books, start with AI agent for accounting: 4 options and what they cost.

TL;DR

Nine options, priced on 10 October 2026

  1. Cheapest self-serve plan in the worked bill (500 two-page invoices): Parseur, $99 a month billed yearly. One login only; a second user means Pro at $399 billed yearly.
  2. Long invoices: Docparser. One credit covers a document of up to five pages.
  3. Low, irregular volume: Lido. 50 free pages that never expire, then $29 a month for 100.
  4. Pay per workflow step: Nanonets, billed per block run at $0.02 to $0.30 a run.
  5. A validation screen at a published starting price: Rossum, from $18,000 a year.
  6. Exception review by quote: Affinda Extract or Docsumo, each with a trial first.
  7. Doxis AI.dp is quote-only. Its separate invoice product lists euro plans sized by invoices a year.
  8. A developer on staff: Google, Amazon or Azure, $10 to $50 for that month of invoices, before anyone builds the inbox, review screen and exports.

What AI document processing actually does

Four jobs sit between a PDF in the inbox and a row in your books:

  1. OCR reads the characters. A scan becomes text.
  2. Extraction names the fields, putting supplier, date, total and line items in their own columns.
  3. Review catches mistakes through validation rules or a person checking flagged fields.
  4. Export sends the rows to a spreadsheet or an accounting tool.

Reading is the commodity step, and the cloud price lists show it. Amazon Textract's own pricing examples for US West (Oregon) put text detection at $0.0015 a page and Analyze Expense extraction at $0.01 a page. Azure Document Intelligence lists $1.50 per 1,000 pages to read and $10 per 1,000 for prebuilt invoice extraction, as of October 2026. Same page, nearly seven times the price, once the software has to know which number is the total.

ABBYY FineReader PDF Standard ($99 a year as of October 2026) sits on the reading side: it makes scans searchable, and nothing on its pricing page describes pulling invoice fields into rows. Sorting each receipt into the right account comes later, in AI agent for expense categorisation.

How I compared them

I read every pricing page I quote a price from on 10 October 2026: in US dollars, in both billing states where a page had a monthly and annual toggle, and at every slider step on Parseur, Docparser and Lido. Doxis's invoice product lists euros even to a US visitor, so its prices stay in euros. Five questions did the sorting:

  • What does it count? The unit moves the bill more than the headline price does.
  • What is free? A tier that renews monthly, a one-off allowance and a trial are different things.
  • What does the cheapest paid plan cost, monthly and annual?
  • Who can log in? Seats can force a bigger plan before volume does.
  • Who catches errors? I counted a review screen only where the vendor's own page names one.

I did not run any of these tools as a customer: no invoices uploaded, no runs timed, no output compared. Most of these vendors print an accuracy figure, and I left every one out because I had no way to check it. Seven of the eight products below show a free tier, a starting allowance or a trial on the pages I read. Test on your own invoices.

Quick comparison

Grouped by how you buy: published plans first, then quotes, then cloud APIs. The worked bill after it prices one illustrative month.

Eight picks, Doxis's separately priced invoice product and three cloud APIs by billing unit, read on the vendors' own pages on 10 October 2026
ToolWhat it countsFree route or trialCheapest paid plan, as of October 2026 (monthly / annual)Who it suits
ParseurPages; an email counts as one20 pages a month, 1 userMicro, 100 pages: $49 / $39One person, up to 3,000 pages
LidoPages, in fixed tiers50 pages that never expireStandard, 100 pages: $29 (no annual toggle)Low or irregular volume
DocparserDocuments of up to 5 pages14-day trial, no cardStarter, 100 documents: $39 / $32.50Multi-page invoices
NanonetsWorkflow block runs, $0.02 to $0.30 each$50 of credit, once$100 a month for 100 creditsTeams that want to pay per workflow step
Doxis SpendControl (invoice product)Invoices per year, in eurosNone listedEffective, 4,000 invoices a year: €95 a monthInvoice-only AP teams
DocsumoQuote: pages, workflows, payment terms14 days, up to 1,000 pagesCustom quoteLoan, claim and eligibility files
Affinda ExtractPages, by quoteTwo weeks, 200 creditsQuoteComplex documents, review queue
Doxis AI.dpQuote: volume, workflow complexity, planNone listedQuoteIts quote form starts at 50 staff
RossumQuote: pages or documents, workflow complexity14-day trialStarter, from $18,000 a yearFinance teams on an ERP
Google Document AIDocuments of up to 10 pagesNo free row for invoices$0.10 per invoiceA developer
Amazon TextractPages3 months for new AWS customers$0.01 a page (Analyze Expense)A developer
Azure Document IntelligencePages, priced per 1,000Separate free tier, 500 pages a month$10 per 1,000 pages (prebuilt models)A developer

US dollars except Doxis SpendControl, which lists euros. Annual prices are per month, billed yearly. Cloud API rates cover the model call only.

The worked bill: 500 two-page invoices a month

The illustrative month: 500 supplier invoices, two pages each, so 1,000 pages and 500 documents. These are list prices before tax, as listed on 10 October 2026, with annual plans shown per month, billed yearly.

Illustrative volume: 500 two-page invoices a month (1,000 pages, 500 documents), list prices before tax as of 10 October 2026
Tool and unitPlan that covers itMonthly costThe catch
Parseur, per pageStarter, 1,000 pages$129, or $99 billed yearlyOne user; a second login needs Pro at $499, or $399 billed yearly
Docparser, per documentBusiness, 1,000 credits$159, or $133 billed yearlyPro's 250 credits are too few, so half of Business sits unused
Lido, per pageBusiness, 1,000 pages$199Up to 5 users; no annual option on the page
Nanonets, per block runStarter, pay as you go$150 to $220$150 assumes one $0.30 extraction block per invoice, $220 my four-block flow; Nanonets does not say whether a two-page invoice runs the extraction block once or twice
Doxis SpendControl, per invoice per yearPremium, 12,000 invoices a year€275Or Effective at €95 plus 2,000 extra invoices from €0.28 each, from about €142 a month; accounting integration is an add-on
Rossum, quoteStarterAt least $1,500 ($18,000 ÷ 12)A "Starting at" price; one-year minimum
Docsumo, Affinda, Doxis AI.dpQuoteNot listedTrials: Docsumo 14 days, Affinda two weeks
Google Document AI, per documentPay as you go$50 (500 × $0.10)API only
Amazon Textract, per pagePay as you go$10 (1,000 × $0.01)US West (Oregon) example rate; API only
Azure Document Intelligence, per 1,000 pagesS0, pay as you go$10Central US rate; API only

Same invoices. Very different bills. A cloud API reads the month for $10 to $50; Parseur, Docparser and Lido charge $99 to $199; Rossum starts at $1,500 a month averaged, as of October 2026. The extra money buys the inbox, the field setup screen, validation, exports and seats, which is everything your team actually touches.

The unit settles the edge cases. Docparser charges a five-page invoice the same single credit as a two-pager, Parseur and Lido charge every page, and Google charges once per document of up to 10 pages. Make those 500 invoices five pages long and Parseur needs 2,500 pages, Premium at $199 billed yearly, while Docparser needs only 500 credits, still Business at $133 billed yearly.

Per invoice, Parseur's annual Starter comes to $0.198, Google to $0.10, and Textract and Azure to $0.02. Docparser Business on annual billing works out to $0.266, because half its credits sit idle, and Lido Business to $0.398.

1. Parseur: cheapest of these self-serve plans for 500 two-page invoices

Parseur's pricing page on 10 October 2026 with annual billing selected and the slider at 1,000 pages a month, showing the Starter plan at $99 a month beside a struck-through $129.
Parseur pricing, annual view at 1,000 pages, captured 10 October 2026.

The unit is printed plainly: "1 page = 1 credit." A three-page PDF costs three credits, and an email counts as one page however long it runs. As of October 2026, the free tier gives one user 20 pages a month. Micro is 100 pages for $49 a month or $39 billed yearly, Starter is 1,000 pages for $129 or $99, and Pro is 10,000 pages for $499 or $399.

Parseur pulls structured data out of PDFs, scans, emails and images. Forward documents to a dedicated email address, drag them in, send them through the API, or connect Zapier, Make or n8n.

A second login moves you up to Pro

Every plan up to Premium (3,000 pages) is single-user. Team accounts start at 10,000 credits a month, so an owner and a bookkeeper sharing 1,000 pages pay $399 a month billed yearly, about four times Starter. The screenshot shows "Invite team members" marked as not included.

No review queue is named. Each result is checked against the mailbox schema, and failures show in the app, send an email and fire a webhook. Exports to Excel, Google Sheets, Zapier, Make and webhooks work on every tier, free included; QuickBooks and Xero are not listed as native integrations.

Pros

  • A free tier that renews every month
  • Exports on every plan, the free one included

Cons

  • Single-user below Pro
  • At 100% of the allowance, new documents stop processing and are marked "Quota exceeded"

2. Docparser: priced per document, so a five-page invoice costs one credit

Docparser's pricing page on 10 October 2026 in its default monthly view, with the slider at 1,000 credits showing the Business plan at $159 a month with teams of up to 50 members.
Docparser pricing, monthly view, captured 10 October 2026.

Docparser reads PDF, Word, spreadsheet, text, XML and image files, then sends the data to Excel, Google Sheets or "100's of other formats and integrations". Documents arrive by upload, email attachment, cloud storage or REST API.

One credit covers a document of up to five pages

The FAQ is exact: "One parsing credit point covers one document with up to five pages." Longer documents use more credits. As of October 2026, Starter is $39 a month for 100 credits, Pro $74 for 250 and Business $159 for 1,000. Billed yearly they cost $32.50, $61.58 and $133 a month, and the credits arrive as one yearly pool.

Best for
Suppliers whose invoices run three to five pages.
Seats
None on Starter. Pro adds up to 5 team members, Business up to 50.
Free route
A 14-day trial with no card, and no free plan. No review queue is named on the pages I read.
Seasonal business?
If an annual pool runs out early, the plan renews for a new term automatically, so size the pool for the whole year, busy months included.

3. Lido: 50 free pages that never expire

Lido's pricing page on 10 October 2026, showing Standard at $29 a month for 100 pages, Scale at $7,840 a year for 42,000 pages and Enterprise from $35,000 a year.
Lido pricing, captured 10 October 2026.

The 50 free pages need no card, and any file can be reset and re-processed within 24 hours of upload at no extra cost. No human review queue is named, and the monthly plans list exports to Excel and CSV.

Of the three monthly plans, the screenshot shows only Standard: $29 a month for 100 pages and one user, as of October 2026. Slide the same card and you get Pro at $119 for 500 pages and 3 users, then Business at $199 for 1,000 pages and 5 users; all users in a workspace share one page pool. There is no annual toggle. Scale is a yearly plan, from $7,840 for 42,000 pages and up to 10 users.

Lido "extracts data from documents, validates it against your systems, and automates downstream workflows." Files come in from Google Drive, OneDrive or email forwarding, handwritten and scanned ones included.

Extraction is one step of accounts payable. Matching invoices to purchase orders, routing them for approval and getting them paid is the longer flow, and AI agent for accounts payable automation walks through it.

4. Nanonets: you pay for each workflow block that runs

Nanonets' pricing page on 10 October 2026, showing a free Starter plan with $50 in credits and then $100 a month for 100 credits, beside Growth and Enterprise plans priced by quote.
Nanonets pricing, captured 10 October 2026.

Nanonets sells extraction inside a workflow, and its pricing page says so: "You pay per block run. Priced by complexity." As of October 2026, simple blocks such as formatting and export cost $0.02 a run, standard AI blocks such as validation $0.10, and complex AI blocks such as data extraction $0.30.

The block mix decides the price of an invoice

Nanonets says "a typical invoice processing workflow runs 4–6 blocks per document." That count is per document; the page does not say whether a two-page invoice runs the extraction block once or twice. For the worked bill I priced four: extract, validate, format and export, which is $0.44 an invoice and $220 for 500. One extraction block per invoice is the $150 floor. Its own FAQ puts the cost "under $2 per invoice end-to-end", so under $1,000 a month here. Treat the mix as my assumption.

As of October 2026, Starter opens with "$50 in credits to start", no card, then "$100/month for 100 credits". The page never says how many credits one run uses. Starter allows 3 users, and ERP integrations sit on Growth, by quote. The homepage describes approval gates that route edge cases to Slack, Teams or email, but the pricing page does not say which plan includes them. Ask before you sign.

5. Docsumo: a 14-day trial, then a quote

Docsumo's pricing page on 10 October 2026, showing a 14-day free trial beside Business and Enterprise plans that both read Custom quote.
Docsumo pricing, captured 10 October 2026.

Docsumo's agents "collect, classify, extract and cross-check every document in a file", and your team reviews only the exceptions. Its Enterprise card names the target: "For loan, claim and eligibility files where every document has to agree."

Free route
"Free trial for 14 days": up to 1,000 pages, 10 user licences and the AI document reviewer, set up with you on a short call.
Pricing, as of October 2026
Business and Enterprise both read "Custom quote", driven by the pages you process, the workflows around each document and how you pay. Setup fees are charged on top.
Before you sign
Cancelling needs 30 days' notice, and unused monthly credits do not roll over.

6. Affinda Extract: review queues included, priced by quote

Affinda Extract's pricing page on 10 October 2026, offering a two-week trial with 200 credits, monthly billing in arrears and an annual commitment, with no prices printed.
Affinda Extract pricing, captured 10 October 2026.

The trial runs two weeks with 200 credits. After that you choose monthly billing in arrears for the pages processed, or an annual commitment you draw down over the year; neither shows a price as of October 2026. Overage is charged at your committed rate, and unused annual commitment does not roll over.

Affinda Extract (formerly Affinda Platform) is built for "complex documents and production workflows". Standard usage includes a "Human-in-the-loop review UI", processing queues, master data matching and validation rules written in plain language. Its product page names invoices with PO matching and lending bundles of 60 to 120 pages.

7. Doxis AI.dp (formerly Klippa DocHorizon): quote-only

The site now says "Klippa is now Doxis", and the product is "Doxis AI.dp (formerly Klippa DocHorizon)", still at klippa.com. Its general pricing page returned "Error establishing a Redis connection" on three loads on 10 October 2026, so I could not read it. The product FAQ says pricing "is based on volume, workflow complexity, and subscription plans", with tailored quotes, and the quote form's company sizes start at 50-99 employees.

Doxis does print euro prices for SpendControl, its separate invoice-processing product. As of October 2026, Effective is €95 a month for up to 4,000 invoices a year and 10 active users, and Premium is €275 for 12,000 invoices and 30 users. The feature grid lists approval workflows and accounting integrations as add-ons from €50 a month. None of that prices Doxis AI.dp.

8. Rossum: from $18,000 a year, validation screen included

Rossum's pricing page on 10 October 2026, showing the Starter plan as Starting at $18,000 per year and three higher plans marked Get A Quote, under a logo that reads A Coupa Company.
Rossum pricing, captured 10 October 2026 with the top banner closed.

Rossum's pricing page carries a banner reading "Coupa Acquires Rossum", and its logo now says "A Coupa Company". As of October 2026, Starter is "Starting at $18,000 per year". It includes "Unlimited seats", ingestion "through email, API, or manual upload" and an "Ergonomic validation screen for exception handling and human in the loop". Business, Enterprise and Ultimate say "Get A Quote". Business adds master data matching, duplicate detection and integration with "SAP, Coupa, Workday, Oracle and more"; the integrations add-on names QuickBooks too.

Price follows "the volume of pages or documents you process and the complexity of your workflows". Go over the limit and you upgrade or "pay per additional page". "The minimum contract length is one year." A 14-day trial comes first.

9. Build it yourself: Google Document AI, Amazon Textract or Azure Document Intelligence

All three are pay-as-you-go APIs, and their prices cover the model call only. No inbox, no review screen, no spreadsheet export. A developer builds those and keeps them running.

Google charges per invoice of up to 10 pages

Google Document AI's pricing table on 10 October 2026, listing the Invoice parser and Expense parser at $0.10 per count and the Bank statement parser at $0.75 per classified document.
Google Document AI processor prices, captured 10 October 2026.

As of October 2026, the Invoice parser costs $0.10 per count, and "1 count equals up to 10 pages in a document". The "Expense parser (formerly receipt parser)" is also $0.10, and the Bank statement parser is $0.75 per classified document. Nothing on the invoice row is free; only the Enterprise Document OCR processor shows a free first band.

Amazon and Azure charge by the page

Analyze Expense costs $0.01 a page in Textract's US West (Oregon) examples, as of October 2026. New AWS customers get 100 free pages of it a month for three months.

Azure Document Intelligence pricing on 10 October 2026, set to Central US in US dollars, showing a free tier of 500 pages a month and prebuilt models at $10 per 1,000 pages.
Azure Document Intelligence pricing, Central US, captured 10 October 2026.

Azure, set to Central US in dollars, lists $10 per 1,000 pages for every prebuilt model, invoice and receipt included, as of October 2026. Its free F0 tier is a separate instance with 500 pages a month and no premium features. Developer-first services such as Mindee, Extend and Reducto also price per page or per credit, with the same building left to you.

Gravity is not a document-processing tool, and it does not read, extract or validate invoices. It is an AI agent platform: you type the task, an expert-built agent runs it, and recurring jobs run on a schedule. The chores you can hand it sit around extraction, such as filing invoice and receipt attachments from your inbox into the right folder before they reach your extraction tool, or a Friday list of documents still waiting for review. Gravity is in private alpha, free to start, no card, paid plans from $5 a month. Apply to the alpha.

Which one should you choose?

Volume and logins decide it. Prices below are as of October 2026.

One person, under 100 pages a month: start on Lido's 50 free pages, then Standard at $29 for 100 pages. At 20 pages a month or fewer, Parseur's free tier costs nothing and renews every month.

A few hundred invoices a month, with a bookkeeper reviewing: Parseur Starter at $99 a month billed yearly, if only one person logs in. If you both need access, Docparser Pro covers 250 documents for up to 5 members at $74 a month, and Business covers 1,000 for $159. The rest of that desk is in AI agents for bookkeepers.

A team that needs several logins: Lido Business gives 5 users 1,000 pages for $199 a month. Nanonets Starter allows 3 users on pay-as-you-go blocks, while Parseur opens to teams only at Pro.

A finance team at volume with an ERP: run trials of Rossum, Affinda Extract and Docsumo on the same batch of awkward invoices. Rossum is the one with a published floor, $18,000 a year. Bring a budget line.

A developer on staff: Azure or Textract at $10 for 1,000 pages, or Google at $0.10 an invoice. Then budget the developer's time to build and run the inbox, review screen and exports.

Two jobs often come before extraction. Files scattered across folders are a Google Drive organization problem, and tax-season paperwork is covered in AI agent for tax document organization.

FAQ

1. Which AI is best for document processing?

It depends on volume and who sets it up. Alone, start with Parseur, Lido or Docparser on free pages or a trial. For a review screen, Rossum starts at $18,000 a year and Affinda and Docsumo quote; with a developer, the cloud APIs cost $0.01 a page to $0.10 an invoice, as of October 2026.

2. Is Google Document AI free?

Not for invoices. As of October 2026 its Invoice parser costs $0.10 per document of up to 10 pages, and only the Enterprise Document OCR processor shows a free first band. Azure runs a separate free tier of 500 pages a month.

3. Can I use ChatGPT to review a document?

I did not research general chat assistants for this guide, so I make no claim about them. The tools here add what a recurring flow needs: a forwarding address (Parseur), fields checked against a schema, review queues (Rossum, Affinda) and exports to Excel or Google Sheets.

4. What is the difference between OCR and intelligent document processing?

OCR turns an image of text into text. Intelligent document processing pulls out named fields such as vendor, date and total, then checks them. Textract shows the gap in its own prices, as of October 2026: $0.0015 a page to read text, $0.01 a page to extract expense fields.

5. How much does AI document processing cost for 500 invoices a month?

At two pages each, on list prices as of October 2026: $10 to $50 on a cloud API plus the cost of building around it, $99 to $199 a month on Parseur, Docparser or Lido, $150 to $220 on Nanonets, and at least $1,500 a month averaged on Rossum.

6. Is there a free AI document processing tool?

Of the tools in this guide, two ongoing free tiers renew monthly as of October 2026: Parseur's 20 pages and Azure's F0 tier of 500 pages, which is an API. Lido's 50 free pages never expire, Nanonets gives $50 of credit once, and Docparser, Docsumo and Rossum offer 14-day trials.

Sources

  1. Parseur pricing (both billing states), homepage, validation and exports pages, read 10 October 2026.
  2. Docparser pricing (both billing states), FAQs and homepage, read 10 October 2026.
  3. Lido pricing and homepage, read 10 October 2026.
  4. Nanonets pricing and homepage, read 10 October 2026.
  5. Docsumo pricing and homepage, read 10 October 2026.
  6. Affinda Extract pricing and product page, read 10 October 2026.
  7. Doxis AI.dp product page, pricing request form and SpendControl prices (EUR), read 10 October 2026; klippa.com/en/pricing returned a Redis connection error on three loads that day.
  8. Rossum pricing and homepage, read 10 October 2026.
  9. ABBYY FineReader PDF pricing, read 10 October 2026.
  10. Google Document AI pricing, read 10 October 2026.
  11. Amazon Textract pricing (US West (Oregon) examples), read 10 October 2026.
  12. Azure Document Intelligence pricing (Central US, USD), read 10 October 2026.
  13. Mindee, Extend and Reducto pricing pages, read 10 October 2026.
  14. Gravity pricing, gravity.fast/pricing, October 2026.
  15. Screenshots captured 10 October 2026 at 1440 pixels wide.