Study: ChatGPT rarely names brands in search answers if it skips them without search

Growth agency Graphite has published a study showing that ChatGPT's built-in knowledge of a brand predicts whether the brand appears in its search-based answers. Brands that ChatGPT rarely named without search were also rarely named with search, even when the pages it cited mentioned them.

Graphite compared logged-out ChatGPT answers to 57 entity-comparison questions, with and without search. That gave 3,115 brand and question pairs, collected in August 2026. It grouped brands by how often they appeared on cited pages: under 5%, 5% to 15%, and 15% or more.

The headline finding is that the pattern held in every group. Among brands mentioned on at least 15% of cited pages, those that ChatGPT named in under a quarter of no-search answers reached a median visibility of only 11% when search was on. Graphite replicated the result twice, once with 100 API prompts and once with 200 prompts run through its own tracking tool.

The study also looked at how ChatGPT searches. Of about 957,000 fan-out queries, 59.6% contained a brand name, and 22.7% used a site: operator. Graphite says that means what the model already knows shapes which pages it retrieves. Over the same period, the share of logged-out ChatGPT responses with citations rose from 56.6% to 88.5% on these comparison prompts.

Why it matters

Most advice on AI visibility focuses on getting cited or mentioned on third-party pages. This study suggests that is only half the picture. If the model does not already associate your brand with a category, a mention on a cited page may not be enough to get you named.

Treat the finding with care. Search Engine Journal points out that the study has no controls for brand awareness, and that visibility with and without search rose together. Graphite itself says the causal link is not fully established. Graphite also sells answer engine optimization services, so read its recommendations with that in mind.

What to do this week

• Test without search. Ask ChatGPT about your category with search turned off, and note whether it names you. Repeat each prompt many times, because answers vary. Graphite suggests at least 50 responses per prompt on a fixed model version.
• Ask the model about you. Check whether it describes your products, features and customers correctly.
• Check crawler access. Graphite recommends allowing training crawlers such as GPTBot, ClaudeBot, Google-Extended and CCBot, and checking that your CDN or firewall does not block them.
• Spread your mentions. Earn coverage across many distinct sites rather than repeating the same text on a few.
• Keep facts consistent. Use the same brand description everywhere, and date details that change, such as pricing.

Track the results over time. Models are retrained on a schedule, and Graphite found models released since July launched two to five months after their knowledge cutoff, so a gap you see today may close with the next release.