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Mercari Japan ads in ChatGPT

In our capture of logged-out ChatGPT, 61 ads from Mercari Japan appeared on screen (all text ads), in 7 distinct ad copies across 3 industries and 10 topics. Each one appeared after our follow-up message asking for a sponsored ad.

No website of its own in our captureLogged-out ChatGPT, USOct 3⁠–⁠4, 2026

ads shown
61
distinct ad copies
7
industries
3
topics
10

Logged-out ChatGPT from US connections, Oct 3⁠–⁠4, 2026. Each ad came after our follow-up message asking for a sponsored ad, so the counts show where Mercari Japan advertised, not how often ChatGPT shows its ads.

Ad copies

Mercari Japan ad copies, most shown first

Each distinct ad copy in our capture, most shown first: the headline of a text ad, or the product and price of a shopping ad. Under each, up to five questions asked in conversations where it appeared, as we asked them; in every one, the ad appeared after our follow-up message asking for a sponsored ad.

7 ad copies

  • Mercari JapanSponsored

    Shop Pokémon & trading cards

    Text ad · shown 35 times

    Questions it appeared after

    1. “i want to track the value of my whole collection on my phone, which app works best for pokemon and sports cards?”Collectibles & Trading Cards · Oct 4, 12:41 am ET
    2. “how to tell if pokemon cards are fake”Collectibles & Trading Cards · Oct 4, 12:53 am ET
    3. “how do i choose which of my pokemon cards are worth sending for grading”Collectibles & Trading Cards · Oct 4, 1:43 am ET
    4. “tcgplayer”Collectibles & Trading Cards · Oct 4, 1:44 am ET
    5. “how much are my pokemon cards worth”Collectibles & Trading Cards · Oct 4, 5:19 am ET

    +30 more conversations with this ad copy

  • Mercari JapanSponsored

    Shop anime merch on Mercari

    Text ad · shown 9 times

    Our export holds no question text for these conversations.

  • Mercari JapanSponsored

    Shop brands for less on Mercari

    Text ad · shown 8 times

    Questions it appeared after

    1. “how much is the lululemon belt bag”Handbags · Oct 4, 5:30 am ET

    +7 more conversations with this ad copy

  • Mercari JapanSponsored

    Where to buy Pokémon TCG?

    Text ad · shown 5 times

    Our export holds no question text for these conversations.

  • Mercari JapanSponsored

    Where to find anime merch?

    Text ad · shown 2 times

    Our export holds no question text for these conversations.

  • Mercari JapanSponsored

    Where can I find brands for less?

    Text ad · shown 1 time

    Our export holds no question text for this conversation.

  • Mercari JapanSponsored

    Shop Funko & pop culture

    Text ad · shown 1 time

    Our export holds no question text for this conversation.

Where it showed

Where Mercari Japan ads appeared

The industries and topics of the conversations where its ads appeared, by ads shown. Topics are our own labels for the questions we wrote.

Industries

Topics

Same topics

Brands in the same topics

Other advertisers whose ads appeared in conversations on the topics where Mercari Japan’s did, ranked by how much those topics overlap. Each tile opens its page.

18 brands

VistaPrint US1,702 ads shown7 shared topicseneba.com138 ads shown2 shared topicsRhoback91 ads shown6 shared topicsbl101.com34 ads shown3 shared topicsTCG HQ12 ads shown1 shared topicEtsy145 ads shown6 shared topicsEbay12 ads shown2 shared topicsnike.com412 ads shown4 shared topicsJordan Craig182 ads shown3 shared topicsTaylorMade Golf162 ads shown1 shared topictemu.com2,744 ads shown4 shared topicsUltra PRO19 ads shown3 shared topicsQuince701 ads shown5 shared topicsNeiman Marcus325 ads shown5 shared topicsllbean.com949 ads shown4 shared topicsShopify463 ads shown1 shared topicSaks Fifth Avenue407 ads shown4 shared topicsposhmark.com108 ads shown5 shared topics
Method

How this data was captured

What we ran, what counts as a shown ad, and what these numbers cannot tell you.

We used logged-out ChatGPT from US internet connections and started a new conversation for every question. Message 1 was the question. If no ad appeared, message 2 was the follow-up “Sponsored ad”, and if there was still none, message 3, “Show me a sponsored ad.”, was a last try. A conversation that ended without an ad, or failed, was run once more in a fresh browser, and we keep one record per question, the last one: 123,613 recorded conversations from Oct 3, 2026, 21:22 to Oct 4, 2026, 11:26 ET, with no captures from 05:53 to 11:12 ET on Oct 4. Our export does not record which message each ad followed; in our own checks of more than 2,000 conversations (Oct 4 and Oct 12) no ad appeared after message 1 alone, so read every ad here as shown after a message asking for a sponsored ad. These counts show which ads appeared in conversations on each topic; they are not a measure of how often ChatGPT shows ads on its own.

Only ads drawn on screen count as shown. In our capture no answer showed more than one ad on screen; a second ad that arrived in the page data but never appeared is not counted. Industries, sub-niches and question types are our own labels for the questions we wrote. Independent; not affiliated with OpenAI. Full methodWhy this is not an ad rateWhat the ads looked like

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