Who Uses ChatGPT to Research Purchases? Audience Profiles, Categories & the AI Search Funnel

Generative AI has entered the purchase funnel — but not evenly, and not everywhere. Behavioral data from Measure Predict's panel of US consumers reveals who is actually turning to ChatGPT before they buy, which product categories they bring those questions to, and how ChatGPT sits alongside — rather than instead of — traditional Google search.

Three questions structure this analysis: Who is the ChatGPT purchase researcher? Which categories drive the most commercially-intent AI conversations? And does ChatGPT replace Google or add to it?

Who Uses ChatGPT for Purchase Research?

When you measure penetration rates — the share of each age group actively using ChatGPT for purchase-related research — 35–44 year-olds lead by a meaningful margin. 4.0% of this cohort shows up in the panel with commercial-intent ChatGPT activity, compared to 3.4% for 25–34 year-olds and just 1.7% for 18–24 year-olds.

This runs counter to the 'Gen Z AI native' narrative. The age group most likely to use ChatGPT for a purchase decision isn't in college — it's in peak consumption years. 35–44 year-olds are buying homes, cars, appliances, and financial products. They are motivated to use AI for considered research in a way that younger, more exploratory cohorts are not.

Which Product Categories Drive ChatGPT Purchase Research?

Two lenses reveal different stories about where ChatGPT matters most commercially. The first is research volume: which categories generate the most purchase-intent ChatGPT conversations. The second is purchase intent depth: within those conversations, how likely is the consumer to actually buy. They do not point to the same categories.

Technology & Software leads in volume (15.3% of commercial prompts), but Retail & Shopping leads in purchase intent probability (35.2%). These are different kinds of commercial opportunity — and they require different strategic responses.

How ChatGPT Changes the Traditional Purchase Funnel

The clearest finding in the funnel data is that ChatGPT does not replace Google — it layers on top of it. 56.4% of consumers who use ChatGPT for purchase research also run Google searches in the same research journey. The reverse is not true: only 15.1% of Google searchers also turn to ChatGPT.

Google Search appears in 79.4% of all purchase journeys in the Measure panel corpus — the single most ubiquitous research platform. ChatGPT doesn't yet appear in the top 10 platforms by journey influence score across the full population, meaning it remains a minority-presence channel overall — but one growing fast among specific, high-value segments.

The behavioral pattern is an 'expanding stack': consumers use ChatGPT for open-ended discovery questions ('what's the best laptop for video editing?' or 'what running shoes are best for overpronation?'), then switch to Google for navigational and price-checking tasks ('brand X reviews', 'buy brand X'). ChatGPT inserts itself at the top of the funnel, before the consideration set is formed. Google closes it.

FAQ: Who Uses ChatGPT for Purchase Research?

Which age group is most likely to use ChatGPT for purchase research?

35–44 year-olds have the highest ChatGPT purchase-research penetration rate at 4.0% of their age group — higher than 25–34 year-olds (3.41%) or 18–24 year-olds (1.71%). They also show the highest ChatGPT Plus subscriber share (8.3%) among commercial-intent users, making them the most commercially engaged AI researchers by penetration, intent quality, and willingness to pay. Data: Measure Predict panel, US, June 2024–Dec 2025.

What types of products do people research on ChatGPT before buying?

By volume, Technology & Software (15.3%) and Health & Wellness (14.3%) dominate commercial ChatGPT research. But by purchase intent probability — the likelihood a conversation directly leads to a purchase — Retail & Shopping leads at 35.2%, followed by Automotive (23.6%) and Telecommunications (23.2%). Shopping questions on ChatGPT carry the highest conversion signal of any category.

Does ChatGPT replace Google for product research?

No — behavioral data shows ChatGPT complements Google rather than replacing it. 56.4% of consumers who use ChatGPT for purchase research also use Google in the same journey. Only 15.1% of Google searchers add ChatGPT. The typical pattern: ChatGPT handles open-ended discovery ('what should I buy?'), then Google handles brand navigation and price comparison.

Are Gen Z using ChatGPT more than older consumers for shopping research?

Not by penetration rate. 18–24 year-olds contribute 28.5% of commercial ChatGPT prompt volume but at the lowest penetration rate (1.71%) and below-average purchase intent quality. They use ChatGPT more for exploratory discovery than for finalizing decisions. The highest penetration rate belongs to 35–44 year-olds at 4.0%.

What does ChatGPT purchase research mean for brand strategy?

Brands need to optimize for AI visibility alongside traditional SEO — particularly in Retail & Shopping (35.2% intent probability), Automotive, and Telecommunications. The core ChatGPT purchase researcher is a 35–44 year-old, likely on iOS, likely a Plus subscriber: a higher-income, considered-purchase profile that over-indexes in high-value categories. Brands appearing in ChatGPT's answers at the discovery stage set the consideration set before a branded search ever happens.

Where does ChatGPT sit in the purchase funnel?

ChatGPT sits at the top of the purchase funnel — the open-ended discovery and consideration stage, where consumers ask 'what's the best X for Y?' This was previously Google's most valuable territory. Brands that appear in ChatGPT's answers here shape the consideration set before any branded search happens. Google then handles navigation, comparison, and final purchase steps.