Insights · Paid traffic · ChatGPT Ads
ChatGPT Ads vs Google Ads: where should your budget go?
By Hafeez R, Senior Paid Media Specialist
Published · 3 minute read
The short answer
For most UK service businesses, Google Ads should keep the larger share of budget, because it is proven, measurable and reaches people actively searching. ChatGPT Ads are worth a fixed test budget alongside it, especially for services people research by asking questions, such as legal, financial and B2B. Compare the two on cost per qualified lead after eight weeks, then move budget to what works.
Since ChatGPT Ads launched in the UK, the question I hear most is "should I move budget from Google?" Usually the answer is no. Add, test, then decide. Here is how the two compare.
How do they compare?
| Google Ads | ChatGPT Ads | |
|---|---|---|
| How people find you | Typing a few words into Google | Asking ChatGPT a detailed question |
| Targeting | Keywords, location, audiences | The context of the conversation |
| Maturity | Over two decades of data and tools | Launched in the UK in June 2026 |
| Tracking | Mature: conversions, calls, offline imports | OpenAI pixel and Conversions API, still developing |
| Who it reaches | Almost everyone searching | Logged-in adults on the Free and Go plans |
| Restrictions | Sector rules and policies | No ads in health, mental health or politics conversations |
Where does Google Ads win?
- Urgent needs: "emergency plumber near me" is a Google search, not a conversation.
- Local searches with map results and call buttons.
- Proven tracking and bidding that optimise towards real clients.
Where can ChatGPT Ads win?
- Considered decisions people talk through: choosing a solicitor, an adviser or a B2B supplier.
- Questions with context: "I am self-employed with rental income, do I need an accountant for Making Tax Digital?"
- Early movers, while fewer competitors are bidding.
How should you split the budget?
- Keep Google Ads runningDo not take budget away from what already works.
- Add a fixed ChatGPT test budgetEnough to produce meaningful enquiries over eight weeks.
- Track both the same wayCost per qualified lead and cost per client, in your CRM.
- Decide on the numbersScale ChatGPT Ads if they match or beat Google on cost per qualified lead.
About the author
Hafeez R, Senior Paid Media Specialist. Hafeez runs paid search and paid social, from Google Ads and Microsoft Ads to retargeting and ChatGPT Ads, with every campaign judged on lead quality, not clicks.
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