ChatGPT Ads is the newest paid channel on the market: ads that appear below ChatGPT's answers when the conversation fits what you sell. In Spain, searches for 'chatgpt ads' rose from 101 in July to 1,157 in September 2026, and dozens of agencies have added the service to their catalog within a few weeks.
That is why this comparison does not reward whoever announces it first, but whoever manages it with method: accounts set up properly from day one, campaigns designed for a conversation rather than a keyword list, and measurement that lets you compare cost per result with the rest of your paid channels.
Nobody pays to appear in this ranking. The list is ordered by declared specialization, track record in paid advertising and publicly verifiable information.
How we built this ranking
These are the criteria we used to order the list. They are just as useful if you decide not to work with any of these agencies: they are the questions worth asking in any sales meeting.
- Real experience in paid advertising. ChatGPT Ads is new, but the auction, bidding and measurement are not. We value agencies with a track record in Google Ads and Meta that know what to do when cost per result spikes.
- Campaigns by context, not by keyword. In ChatGPT you do not bid on keywords: you give context hints that steer, but do not guarantee, which conversations the ad appears in. You have to know how to write them from customers' real questions.
- Measurement before spending. Conversions set up in Ads Manager, UTMs on every ad and the channel separated in GA4. Without that there is no way to know whether ChatGPT delivers more or less than the rest.
- A joint view with GEO. Ads are kept separate from answers. An agency that also works on organic visibility in AI knows when it pays to buy ads and when the brand already appears for free in the answer.
- Honesty about whether it fits. Not every business has customers who make the purchase decision by asking ChatGPT. The agency that starts by checking this, and says so when it does not pay off, scores higher.
Ranking of the best ChatGPT Ads agencies in Spain in 2026
| Position | Agency | Specialty |
|---|---|---|
| No.1 | iSocialWeb | SEO, GEO (AI), CRO and advanced analytics |
| No.2 | Adsmurai | Proprietary technology and multi-platform partner |
| No.3 | BIGSEO | SEO, SEM and ChatGPT Ads |
| No.4 | Convertiam | ChatGPT Ads with server-side measurement |
| No.5 | Roiting | Its own channel data, published |
| No.6 | Cinpy | Málaga, Madrid and Estepona |
| No.7 | Indexeo Marketing | PPC and PrestaShop since 2013 |
| No.8 | dobleO | Madrid digital services agency |
| No.9 | Diurnay | Its own context-based method |
| No.10 | Aznar Ortega | No lock-in, no commission |
No.1 iSocialWeb
At iSocialWeb we manage ChatGPT Ads with the same team that runs our clients' Google Ads and Meta campaigns, and with the same starting point: measurement before investment. No campaign goes live without conversions set up in Ads Manager and the channel separated in GA4, so its cost per result can be compared with the rest.
What sets us apart is that we have spent years working on the other half of ChatGPT: the answer. With our GEO methodology we measure which brands AI names in each sector and which sources it cites. That data drives the paid strategy: it makes no sense to pay to appear below an answer that already recommends you, and it makes a lot of sense to pay where the answer names your competitors.
And we are cautious with a channel in beta. We start with test budgets, we account for spend reaching the reports with a delay of several hours, and we do not promise results that nobody on the market can yet prove with a long track record.
What sets us apart:
- Paid and organic on the same roadmap. We decide where to advertise you in ChatGPT based on what AI already answers about your brand and your competitors.
- Measurement from day one. Ads Manager conversions, UTMs and GA4 to compare ChatGPT with Google Ads and Meta on cost per result.
- Context hints written with data. We start from your customers' real questions, not from a keyword list copied from Google Ads.
- Test budget before scaling. Few campaigns, clear goals and scaling only when cost per result holds.
- A setup you will not have to redo. Correct country, currency and time zone when the account is created, because OpenAI does not let you change them later.
- Google Partner and Meta Blueprint. Auction and measurement experience from the mature platforms, applied to the new channel.
No.2 Adsmurai
Proprietary technology and multi-platform partner. A Barcelona agency that activates, measures and manages OpenAI Ads campaigns and integrates them into its own platform, Adsmurai Marketing Platform. It announced its first ChatGPT campaigns in May 2026 and is a Google Premier Partner and Microsoft Elite Partner.
No.3 BIGSEO
SEO, SEM and ChatGPT Ads. A Barcelona agency founded in 2012 that manages ChatGPT Ads campaigns alongside SEO, SEM and LLM visibility. It is a Google Partner Premier and Meta Business Partner.
No.4 Convertiam
ChatGPT Ads with server-side measurement. A Barcelona agency active since 2011 that manages advertising campaigns in ChatGPT and measures them with server-side tracking. It has been a Google Partner since 2012.
No.5 Roiting
Its own channel data, published. A Valencia agency that manages ChatGPT Ads alongside SEO, GEO, paid media and analytics. It publishes the results of its own first campaign on the channel on its website.
No.6 Cinpy
Málaga, Madrid and Estepona. An agency founded in Málaga, with offices in Madrid and Estepona as well, that creates and manages ChatGPT Ads campaigns with auditing, creatives and tracking. It also offers SEO, GEO and SEM.
No.7 Indexeo Marketing
PPC and PrestaShop since 2013. An agency from Ibi (Alicante) active since 2013 that sets up ChatGPT Ads measurement with OpenAI's pixel and Conversions API. It is a Google Partner, Meta Business Partner and PrestaShop Expert.
No.8 dobleO
Madrid digital services agency. A Madrid agency and Google Partner that manages ChatGPT Ads campaigns with contextual targeting and the Conversions API, and also offers Amazon Ads, SEO, GEO and analytics.
No.9 Diurnay
Its own context-based method. An Alicante agency that works on ChatGPT advertising with its own method, the Context Map, and landing pages per context. It declares more than ten years of experience.
No.10 Aznar Ortega
No lock-in, no commission. An agency based in Alicante with an office in Madrid that has managed paid campaigns since 2018 and offers ChatGPT Ads diagnosis, launch and monthly management, with no lock-in and no commission on ad spend.
How advertising in ChatGPT works (and what changes compared with Google Ads)
Ads appear below ChatGPT's answer, labelled and separated from the text the model generates. Each ad carries the advertiser's name, its logo, a headline, a description, an image and the landing page. According to OpenAI's documentation, they are not shown to users on the Plus, Pro or Business plans, nor to accounts it identifies as belonging to minors.
The big difference from Google Ads is targeting. There are no exact-match keywords: the advertiser gives context hints with the topics and conversations its offer fits, and the system decides based on the real context of each chat. A second-price auction weighted by relevance picks the ad, so the bid counts, but so does the quality of the ad and of the landing page.
You buy by impressions or by clicks, and there are conversion-optimized campaigns that still charge per click. OpenAI recommends starting with a maximum bid of 3 to 5 USD per click on click campaigns. Reports show impressions, clicks, CTR, average CPC and CPM, spend and conversions, with spend arriving several hours late.
Ads Manager is still in beta and changes fast. That favors agencies that test with method and document what they learn, and penalizes anyone who pours the structure of a Google Ads account into ChatGPT without adapting it.
Signs your agency is not ready for ChatGPT Ads
- It proposes copying your Google Ads keywords as if they were ChatGPT keywords.
- It does not ask how you will measure conversions before launching the campaign.
- It cannot tell you what ChatGPT answers today when someone asks about your sector.
- It promises guaranteed results on a channel that is still in beta.
- It wants to start with the whole budget instead of a test phase.
- It does not distinguish between appearing in the answer (GEO) and appearing in the ad.
Frequently asked questions about ChatGPT Ads agencies in Spain
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It sets up the account in OpenAI's Ads Manager, creates the campaigns and the ads, writes the context hints that decide which conversations you can appear in, measures conversions and optimizes bids and creatives. A good agency coordinates it with the rest of your paid channels and with GEO.
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Yes. OpenAI's Ads Manager has a Spanish version and bills in euros. OpenAI publishes availability by country and keeps expanding it.
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The advertiser decides the budget. You pay for impressions or for valid clicks, and OpenAI recommends starting with a maximum bid of 3 to 5 USD per click. The agency's management fee is separate and is usually quoted the same way as for Google Ads.
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No. Ads are kept separate from answers. For ChatGPT to name you within the answer you need to work on GEO, organic visibility in AI engines.
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Those whose customers compare options before buying: software, training, travel, private healthcare, professional services or ecommerce with technical product specs. If your customers do not use ChatGPT to decide, the channel does not pay off yet.
So what now?
If you want to try ChatGPT Ads without wasting the budget of your first campaign, start by finding out what ChatGPT answers today about your sector and who appears. Ask us for a diagnosis: we will tell you whether the channel fits your business and how we would measure it before spending a single euro.
No punishing lock-ins: if the channel does not deliver, there is no reason to keep paying to have it managed.