AEO Audit is a free tool that scores B2B SaaS websites for AI search visibility — how likely they are to be cited by ChatGPT, Perplexity, and Google AI Overviews when B2B buyers search.

What is AI Engine Optimization (AEO)?

AI Engine Optimization (AEO) is the practice of structuring content, entity signals, and technical infrastructure so that AI engines cite your brand in generated answers. It extends traditional SEO to cover ChatGPT, Perplexity, Gemini, and Google AI Overviews.

Yes. AEO Audit is free. Enter any B2B SaaS brand and receive a full AI visibility score with prioritised recommendations.

How does AEO Audit score websites?

AEO Audit scores across six pillars: AI Visibility (22%), Brand Authority (23%), Content Quality (18%), Platform Optimization (15%), Structured Data (12%), and Technical AEO (10%). Each pillar reflects specific signals that AI engines use when deciding which sources to cite.

Subcategory · AI Citation Index

Billing & Invoicing

Billing & invoicing is a consolidated category with a clear top tier. Xero is the consensus pick — it surfaces in 82% of discovery queries on every engine and wins more head-to-heads than it loses. Quickbooks captures the most eyeballs at 94% visibility but scores below the median in comparisons. Suitedash is gaining AI attention sharply, up 14 points in recent months, while Intacct has dropped 17 points. The kingmakers are Recurly, Zuora, and Rev — brands that appear in many head-to-head comparisons across engines but do not dominate the discovery shortlist. This is a consolidated category with a handful of brands splitting most AI attention and a long tail of niche players.

51 discovery queries · 120 head-to-heads · refreshed May 1, 2026

Discovery stage

The shortlist

Across 51 buyer-style "Billing & Invoicing" queries

Most cited · Billing & InvoicingLive

Quickbooks

quickbooks.com

Cited in 48 of 51 buyer questions for Billing & Invoicing — surfaced by 3 of 3 AI engines.

ChatGPTGeminiClaude

Citation rate

94%

Visibility score66/100

See the full Quickbooks profile→

Quickbooks shows up in 94% of buyer queries about billing & invoicing software and appears across all engines tracked. Freshbooks and Xero each surface in 82% of the same queries with identical cross-engine visibility. Netsuite, Stripe, and Chargebee form the second tier, appearing in 69%, 65%, and 51% of discovery prompts respectively, all with presence on ChatGPT, Claude, and Gemini. Wave and Recurly round out the consensus shortlist at 49% and 41%.

Hover or click a logo to see brand details

X = coverage across discovery prompts · Y = engine diversity · Bubble size = total mentions

Tracked acrossChatGPT,Gemini,Claude

Get weekly AI visibility changes for Billing & Invoicing sent to your inbox.

Score shifts, new entrants, citation gaps — every Monday.

Signal by intent

By topic

Top 5 most-cited brands per intent cluster. Brands with zero citations in a topic are not shown.

Built

5/5

Oracle

5/5

Bill

5/5

Netsuite

4/5

Microsoft

4/5

Quickbooks

4/4

Freshbooks

4/4

Stripe

4/4

Built

4/4

Bonsai

4/4

Stripe

4/4

Chargebee

4/4

Recurly

4/4

Built

4/4

Zuora

4/4

Built

4/4

Stripe

4/4

Quickbooks

4/4

Xero

4/4

Freshbooks

4/4

Built

4/4

Quickbooks

4/4

Xero

4/4

Freshbooks

3/4

Sage Intacct

3/4

Built

4/4

Quickbooks

4/4

Xero

4/4

Sage

4/4

Freshbooks

3/4

Built

4/4

Freshbooks

4/4

Quickbooks

4/4

Bill

4/4

Xero

4/4

Bill

4/4

Oracle

3/4

SAP

3/4

Zuora

3/4

Stripe Billing

2/4

≥50% cited

25–49%

<25%

Topics are discovery-stage prompt clusters · billing-invoicing

Evaluation stage

Head-to-head

How often AI cites each brand across uniform category evaluation prompts · median 51/100

Suitedash wins the most head-to-head comparisons in billing & invoicing, outscoring the category median across a dozen matchups. Recurly and Pabbly both land above the median in evaluation prompts. Xero, despite its strong discovery footprint, scores exactly at the median when buyers ask AI to compare options directly. Intacct and Rev lose more head-to-heads than they win, both scoring below the median across 10 and 11 comparison queries respectively.

Hover or click a logo to see brand details

X = evaluation citation rate · Y = evaluation prompts cited in · Bubble size = citation exposure

Median citation rate 51/100

Each brand's score is the share of category evaluation prompts where AI cited them across all four engines — the same prompt pool for every brand. Brands above the median citation rate have stronger presence in evaluation-stage queries.

Brands to know

In this category

Xero

Consensus pick

Cloud accounting with recurring billing

Read brand profile →

Freshbooks

Invoicing for freelancers and service businesses

Read brand profile →

Stripe

Developer-first payments with billing infrastructure

Read brand profile →

Chargebee

Subscription billing and revenue operations

Read brand profile →

Suitedash

Riser

All-in-one client portal with invoicing

Read brand profile →

Citation sources

Where AI pulls citations from

828 citations captured across Billing & Invoicing prompt runs.

Vendor pages

184

Product, help, and marketing pages from tracked vendors

Independent sources

184

Reviews, encyclopedias, forums, press — not vendor-owned

Buyer questions

What AI cites for top Billing & Invoicing questions

All queries in this category are discovery-stage exploration. Buyers ask AI for the best billing & invoicing tools filtered by company size and vertical: 'billing & invoicing tools for retail companies', 'top billing and invoicing tools for enterprise organizations'. A smaller share asks process-oriented questions like 'how to streamline invoicing processes', treating AI as a workflow consultant rather than a product picker.