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

Who AI is citing in Subscription Management

HubSpot Commerce Hub leads AI citations at 76 avg score; Paddle plunged 16 points month-over-month while Chargebee rose 6.

Brands tracked

Avg AEO score

62/100

Citation coverage

of brands cited at least once

Dominant brands

cited > 50% of queries

Discovery stage

The shortlist

When buyers ask AI for the best Subscription Management software

No discovery-stage prompts have been scored against this category yet — once the shortlist cron runs, this section will surface which brands AI cites most.

Evaluation stage

The battleground

How brands fare on comparison queries · category median 43/100

HubSpot Commerce Hub scores 76 on direct comparisons, well above the 43 median. Chargebee follows at 53, then Recurly at 48. Paddle scored zero across four comparison queries, indicating near-total absence from head-to-head evaluation contexts. Six of seven tracked brands cluster between 39 and 53, showing tight competition below HubSpot.

Each brand's evaluation score averages how AI responds to head-to-head comparison queries that mention them. Above-median brands win their comparisons more often than they lose.

Trends

Over the last 12 months

Too few audits to establish a trend. March and April 2026 data show stable category averages (62 to 63), but Paddle dropped 16 points while Chargebee gained 6 in the two-month window.

Biggest gain

Chargebee

+6 pts

Biggest drop

Paddle

-16 pts

Editorial picks

Brands worth watching

HubSpot Commerce Hub

Scored 76 on evaluation queries and 78 in featured rankings, the highest in the category. Its lead over the 43 median suggests strong AI model preference when buyers compare subscription tools directly.

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Chargebee

Rose 6 points month-over-month and holds a 53 evaluation score. The momentum and above-median performance position it as the closest challenger to HubSpot in AI citation contexts.

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Paddle

Dropped 16 points between March and April 2026, the steepest decline in the category. Scored zero on four comparison queries, indicating vanishing presence in AI-driven evaluations despite a 52 featured score.

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Zuora

Averaged 39 across five comparison queries, the most tested brand in the dataset. The volume of evaluations reflects brand awareness, but the below-median score shows it trails HubSpot and Chargebee in AI recommendation strength.

Read brand profile →

FAQ

Subscription Management questions, answered

What is the best subscription management software for SaaS companies?+

HubSpot Commerce Hub leads AI citations with a 76 evaluation score. Chargebee follows at 53 and is gaining momentum, up 6 points in recent audits. Zuora appears in the most comparisons but scores below the 43 median.

How does Chargebee compare to Recurly?+

Chargebee scores 53 on evaluation queries versus Recurly's 48. Chargebee also shows upward movement, gaining 6 points month-over-month, while Recurly holds steady at 63 in featured rankings but lags in direct comparisons.

Why is Paddle's AI citation score dropping?+

Paddle fell 16 points between March and April 2026, the largest decline in subscription management. It scored zero across four comparison queries, suggesting AI models are omitting it from head-to-head evaluations despite historical brand presence.

Which subscription billing platform appears most often in AI comparisons?+

Zuora logged five comparison queries, the highest volume in the dataset. However, its 39 average score sits below the 43 median, indicating frequent mention but weaker recommendation strength versus HubSpot Commerce Hub and Chargebee.

Is there a clear leader in subscription management software citations?+

HubSpot Commerce Hub scores 76 to 78 across evaluation and featured metrics, well above all competitors. No brand achieved dominant shortlist coverage, but HubSpot's 33-point lead over the median makes it the de facto AI citation leader.

What is the average AI citation score for subscription management tools?+

The category average is 61.6 across 47 brands. The evaluation median sits at 43, meaning half of tested brands score below that threshold. HubSpot Commerce Hub and Chargebee are the only brands consistently above 70 in featured rankings.

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