Something structural has changed in how consumers make purchase decisions. When a consumer asks Google AI which smartwatch to buy, or which luxury bag is worth the price, or which noise-cancelling headphones are best, they get an immediate answer. This answer is synthesized, confident, and specific, and it’s drawn from editorial content across hundreds of editorial publishers.
Then they buy without clicking through to any of the publisher content AI has scanned and without generating a trackable cookie event. This means there is no data point that a traditional affiliate program can see, attribute, or compensate.
This isn’t a trend. It’s the default behavior of AI-powered search, and it’s been widening the gap between what publishers actually influence and what they actually get paid for every month.
Today, we’re publishing the 2026 Zero-Click Commerce Index™, the most comprehensive measurement of that gap to date.
The Numbers
3.84x Average HaloIndex™ across six U.S. consumer categories
10.94x Highest HaloIndex™ — Luxury Fashion
1,056 Total citation gaps identified, including 47 critical priority gaps
The HaloIndex™ measures the ratio of publisher-driven AI Overview influence to traditional click-through attribution. A score of 1.0 means parity. Every point above 1.0 represents publisher influence that last-click programs cannot measure or compensate.
Across the six categories in this report (Luxury Fashion, Smart Wearables, Casual & Everyday Apparel, Beauty & Personal Care, Data Storage & Memory Solutions, and Consumer Audio Devices), that ratio averages 3.84x. Publisher-driven purchase influence running through Google AI Overviews is occurring at nearly four times the rate that traditional measurement registers.
How We Measured the Data
VantagePoint™ by Partnerize tracks publisher influence by monitoring which editorial properties are cited in Google AI Overview and Answer Engine responses to commercial search queries, then connecting those citations to downstream conversion activity. The methodology excludes paid, direct, email, and already-attributed journeys. It also excludes platforms like Reddit, YouTube, and Amazon from the HaloIndex™ calculation, ensuring the metric reflects verified editorial publisher influence rather than broader web visibility.
The result is a conservative, auditable measurement framework certified by the Alliance for Audited Media (AAM). When VantagePoint™ says a publisher generated clickless influence, there’s a citation trail and a conversion signal behind it.
Category by Category: What the Data Shows
Luxury Fashion — HaloIndex™: 10.94x
The highest-scoring category in the report, and for a clear reason: Consumers don’t buy luxury handbags or designer coats impulsively. They research. They read major fashion titles. They scroll Instagram. They watch haul videos across multiple sessions before committing. Almost none of that activity generates a trackable click.
The top publishers in this category are generating significant clickless share through AI Overview citations. This is influence that traditional programs aren’t measuring. At the brand level, several luxury labels show multipliers between 5x and 7x, meaning traditional measurement captures a fraction of the publisher-influenced value their programs are actually receiving.
Smart Wearables — HaloIndex™: 7.33x
The purchase journey in this category is unusually research-intensive. Consumers evaluating competing Smart Wearables are comparing specs, health features, ecosystem compatibility, and battery life across multiple sessions. Every one of those sessions is a publisher touchpoint.
Queries like “best fitness tracker” and head-to-head device comparisons are exactly the kind of commercial searches that consistently trigger AI Overview responses, making Smart Wearables one of the most AI Overview-active categories VantagePoint™ has measured. The leading specialist and consumer tech publishers in this space are generating clickless share well above what their click-based attribution registers, with some showing gaps of several percentage points.
Casual & Everyday Apparel — HaloIndex™: 3.02x
The category had 95 distinct search queries and 3,585 total citations, making it the highest citation volume of any category. Leading fashion and lifestyle publishers are driving meaningful clickless share through AI Overview citations for queries ranging from trend roundups to brand comparisons to seasonal edits.
The data also tells an instructive inverse story: Brands whose sales funnel runs predominantly through deal, coupon, and retail channels show sub-1.0 multipliers: their click-based infrastructure is strong enough to capture most of what the affiliate ecosystem produces. The HaloIndex™ is designed to surface exactly that distinction.
Beauty & Personal Care — HaloIndex™: 2.96x
This category had the most extreme brand-level findings in the entire report. Several emerging and indie beauty brands show multipliers in the double or triple digits; their editorial presence in AI Overview responses dramatically outpaces their click-based affiliate footprint. These are brands where traditional attribution is capturing a very small fraction of actual publisher-influenced value.
Beauty is also the only category with zero critical-priority citation gaps, though 232 medium-priority gaps across 57 brands signal an opportunity that rewards sustained publisher relationship investment rather than targeted intervention.
Data Storage & Memory Solutions — HaloIndex™: 2.27x
This is a more spec-driven, technical category, but the gap is still structural. The dominant specialist reviewers in this space are generating influence through AI Overview responses for storage queries well beyond what their click-based attribution reflects. One brand in the category carries a 5.06x multiplier despite a modest overall share, reflecting a brand whose affiliate footprint underrepresents its actual editorial authority.
The contrast within a single category, between brands with strong retail-channel infrastructure and those driven by editorial influence, demonstrates why the HaloIndex™ needs to be read at the brand level, not just the category level.
Consumer Audio Devices — HaloIndex™: 1.54x
The lowest category average conceals the single most striking publisher gap in the entire report. The dominant specialist reviewer for consumer audio generates clickless share against click-based attribution at a ratio that represents more than 11 percentage points of untracked publisher influence. When AI answers “best noise-cancelling headphones” or “best earbuds,” it draws heavily from specialist review content. The consumer buys. The publisher receives no traditional commission credit.
A category average of 1.54x also masks dramatic brand-level variation. One brand carries a 5.01x multiplier within a category that averages well below that.
The Publisher Gap: A Structural Problem, Not a Tracking Gap
Across every category in this report, the pattern is consistent: The publishers generating the most influence through AI discovery are receiving the least compensation as part of traditional programs.
This is a measurement model problem. Last-click attribution was built for a world where the definitive click was the primary signal of purchase intent. In a world where AI synthesizes publisher content to answer commercial queries before the consumer ever reaches a link, last-click captures only a fraction of what’s actually happening.
The 1,056 citation gaps identified across these six categories represent specific articles and publisher relationships where the gap between influence and compensation is large enough to act on immediately. They’re identified, prioritized, and mapped to specific content.
What This Means for Advertisers
An average HaloIndex™ of 3.84x means last-click attribution is capturing less than 30% of the publisher-influenced purchase activity occurring in these categories. The publishers shaping your category are generating measurable purchase influence through AI Overview citations that your program currently can’t see, attribute, or reward.
The practical implication: your publisher optimization decisions are being made on incomplete data. The publishers you’re investing in, the ones you’re not, and the commission rates you’re setting are calibrated to a measurement system that accounts for a fraction of the influence it’s supposed to be tracking.
VantagePoint™ fills that gap. It tracks publisher citations in Google AI Overviews and Answer Engines, connects them to downstream conversions, and surfaces the influence data that last-click programs miss. The result is a complete picture of publisher performance, along with a payable record of the influence your program has been receiving without compensation.
What This Means for Publishers
If you’re producing editorial content in any of these six categories, you are almost certainly generating more purchase influence than your affiliate commissions reflect. The question is how much, and the answer varies dramatically by publisher, by category, and by the specific queries your content ranks for in AI Overview responses.
The structural dynamic is consistent across every category: specialist reviewers, major consumer editorial titles, and mainstream media properties are all being cited in AI-generated answers that lead directly to purchases without generating clicks, cookies, or commissions.
The 1,056 citation gaps in this report represent the specific places where that dynamic is most pronounced. Each one is a conversation waiting to happen between a publisher and an advertiser about influence that’s already occurring and that both parties have an interest in measuring and compensating.
The 2026 Zero-Click Commerce Index™ is available now. It includes full HaloIndex™ data for all six categories, brand-level multiplier tables, publisher gap analysis, citation gap prioritization, and strategic implications for advertisers and publishers.