ChatGPT Ads vs Google Ads: Which Should Thai Businesses Use?

Use Google Ads to capture people who are already searching for what you sell, and add ChatGPT Ads to reach people while they research and compare options inside ChatGPT. Google matches ads to the keywords people type. ChatGPT matches ads to the conversation, guided by your context hints, ad copy and landing page. For most Thai businesses already advertising on Google, the right move is to keep Google running and test ChatGPT Ads alongside it with its own budget and its own tracking.

This guide compares the two channels on targeting, billing, measurement and audience, and shows when running both makes sense. DAB runs both: our ChatGPT Ads management and our Google Ads services share the same tracking and landing pages, so results can be compared fairly.

How are ChatGPT Ads and Google Ads different?

The biggest difference is the moment each channel reaches. A Google search ad appears when someone types a query, often when they already know what they want. A ChatGPT ad appears below a ChatGPT response, while someone is asking questions, weighing options and planning what to do next.

Keywords vs context hints: how does targeting work?

Google Ads is built on keywords. You choose the queries you want, pick match types, add negative keywords, and read the search terms report to see what people actually typed.

ChatGPT Ads have no exact-match keywords. At ad-group level you add context hints: short, natural phrases that describe what you offer, who it helps and when it is useful. OpenAI is clear that context hints guide relevance but are not targeting rules and do not guarantee delivery in specific conversations. A good hint for a Bangkok business reads like a sentence, such as "same-week aircon cleaning for condo owners in central Bangkok", rather than a list of keywords.

Hard limits come from campaign settings instead. You choose countries and, where available, regions and cities; platforms (Android app, Android web, desktop web, iOS app and iOS web); and custom audiences to include or exclude. Inclusion audiences need at least 25,000 matched users, so most small businesses will rely on location and context instead.

How does billing compare?

Google Search campaigns usually charge per click, and Google lets daily spend run up to twice the average daily budget on busy days while keeping the monthly total within its own limit.

ChatGPT Ads bill in one of two ways: per 1,000 impressions or per valid click. The Conversions objective optimises delivery toward a lead or a sale, but OpenAI still bills it per click or per impression, never per conversion. The minimum daily budget for accounts billed in Thai baht is 33 THB, and daily budgets are averaged over a Sunday-to-Saturday week, with up to twice the daily budget allowed on a single day. Our guide to ChatGPT Ads costs in Thailand covers the rules in full.

In practice, both channels reward the same discipline: a clear goal per campaign, bids set from what a lead is worth to you, and landing pages that match the ad.

How does measurement compare?

Google Ads measures conversions with the Google tag, conversion actions and, where you use it, GA4 imports. Our guide to installing Google Ads conversion tracking covers that setup.

ChatGPT Ads use the OpenAI Pixel in the browser and the Conversions API from your server, with a click reference called oppref that must survive your redirects. Our step-by-step guide to ChatGPT Ads conversion tracking covers the Pixel, de-duplication and LINE leads.

Reporting differs too. Ads Manager shows impressions, clicks, spend, click-through rate, average CPC, average CPM and conversions, but it does not show the conversations your ads appeared in; OpenAI designs reporting around campaign performance rather than individual activity. There is no equivalent of Google's search terms report. Add UTM parameters to both channels so GA4 compares them side by side, and judge both on cost per real enquiry rather than click-through rate.

Who sees the ads on each platform?

Google search ads can reach anyone who searches. ChatGPT Ads have a narrower audience by design: OpenAI does not show ads to users on Plus, Pro or any Business plan, or to accounts identified as belonging to people under 18. For B2B companies whose buyers use ChatGPT through a paid company plan, that matters, because those buyers will not see your ads in ChatGPT.

Industry rules differ as well. OpenAI's policy eligibility table shows that outside the United States many health categories, such as hospitals, telehealth and minimally invasive cosmetic procedures, are not allowed, and several financial and legal categories are restricted or not allowed. A Bangkok clinic or law firm should check that table before planning a ChatGPT budget, and for now keep Google as its main paid search channel.

When should a Thai business run both?

Run both when your customers research before they buy. B2B services, software, education, travel, home services and considered purchases all fit: Google catches the ready-to-buy searches, and ChatGPT reaches people earlier, while they compare. Set it up so the comparison is fair:

1. Separate budgets. Fund the ChatGPT test from a growth budget instead of cutting your best-performing Google campaigns.
2. The same conversion definitions. A lead should mean the same thing in both platforms: a submitted form, a LINE chat or a booked call.
3. The same landing pages. Send both channels to the service page that best matches the ad, in the visitor's language.
4. The same yardstick. Compare cost per qualified lead, checked against your CRM or LINE inbox, not clicks or CTR.

Stay with Google alone for now if your category is restricted on ChatGPT, if your tracking is not in place yet, or if your whole budget is already stretched across Google campaigns that work. And remember that ChatGPT Ads are separate from being mentioned in ChatGPT's answers. Organic visibility in AI answers is its own discipline, which we handle through our AEO and GEO services.

FAQ

Is ChatGPT Ads better than Google Ads?

Neither is better for every business. Google Ads captures people already searching for what you sell. ChatGPT Ads reach people while they research and compare in ChatGPT. Most Thai businesses should keep Google running and test ChatGPT Ads alongside it.

Does ChatGPT Ads use keywords like Google Ads?

No. ChatGPT Ads have no exact-match keywords. You add context hints at ad-group level to describe what you offer, who it helps and when it is useful. They guide relevance but do not guarantee delivery in specific conversations.

How is ChatGPT Ads billing different from Google Ads?

ChatGPT Ads bill per 1,000 impressions or per valid click, even for campaigns optimised toward conversions. The minimum daily budget for Thai baht accounts is 33 THB, and daily budgets are averaged over a seven-day week.

Can clinics and financial companies in Thailand use ChatGPT Ads?

Many cannot yet. Outside the United States, OpenAI does not allow many health categories and restricts or disallows several financial and legal categories. Check OpenAI’s policy eligibility table before planning a budget.

Should I move my Google Ads budget to ChatGPT Ads?

No. Fund a ChatGPT Ads test from a separate growth budget, measure it with the same lead definitions as Google, and compare cost per qualified lead before shifting spend.

Not sure where ChatGPT Ads fit next to your Google Ads?

We run both channels for Thai businesses and measure them on the same leads. Ask us for an honest view of whether ChatGPT Ads suit your business and how to test them without hurting what already works. See our ChatGPT Ads service and our Google Ads services, or chat with our team now.