Published: 14 April 2026

Last updated: 28 July 2026

Reviewed by: Ema Fulga, AI Search Content Strategist

How Much Does GEO Actually Cost? A Straight-Talking Guide to AI Search Optimisation Pricing

Everyone wants to know the price. Nobody wants to be the person who paid too much for something that turned out to be a few rewritten FAQs and a prayer.

So here it is: a no-nonsense breakdown of what AI search optimisation (also known as GEO, or generative engine optimisation) actually costs in the UK, what drives that cost, and how to tell the difference between real work and a rebadged SEO retainer with "AI" stapled to the front.

The honest truth about AEO audit cost: it varies enormously, and that range exists for a reason. Understanding why is the single most useful thing you can do before signing anything.

What Actually Drives GEO Pricing

GEO is not a product you can package neatly into a £299/month subscription. (Some people try. We'll get to that.) The cost of a proper AI search optimisation engagement depends on several real variables.

The size and complexity of your brand's footprint

A 10-page website for a boutique consultancy is a very different beast from a 500-page e-commerce site with 12 product categories. More content means more to audit, more to restructure, and more to monitor across AI platforms like ChatGPT, Perplexity, and Google's AI Overviews.

How visible (or invisible) you currently are in AI answers

If ChatGPT has never heard of you, the foundational work is significant. If you already appear occasionally but inconsistently, the work shifts towards authority consolidation and structured content. Starting from zero costs more.

The scope of platforms being optimised for

Are we talking Google AI Overviews only? Or the full stack: ChatGPT, Perplexity, Gemini, Copilot, and emerging models? Each platform interprets content slightly differently. Broader coverage requires broader strategy.

Whether you need ongoing work or a one-time audit

A foundation audit is a defined piece of work with a clear output. An ongoing retainer covers continuous monitoring, content iteration, and adapting to algorithm shifts as AI models update. These are priced very differently.

The bottom line: GEO pricing reflects the depth of the problem being solved. Cheap GEO usually means a shallow problem definition, not a bargain.

Typical Pricing Ranges: What to Expect

Here is what the market looks like in the UK in 2026, with no fluff.

Foundation audits (AEO audit cost)

A proper AI search audit, the kind that actually tells you something useful, typically falls in the following range:

The £500 audits exist. They are, almost universally, a checklist someone ran through a tool and formatted into a PDF. Useful as a conversation starter. Not useful as a strategy.

Ongoing GEO retainers

Once the foundation is in place, ongoing AI search optimisation is a continuous discipline. AI models update. Content needs refreshing. New competitors enter your space in the AI conversation. Retainer pricing in the UK typically looks like this:

• Entry-level retainers: £800 to £1,500/month. Usually covers light content updates and basic monitoring.

• Mid-range retainers: £1,500 to £4,000/month. Covers active content creation, structured data maintenance, and regular reporting.

• Strategic retainers: £4,000 to £10,000+/month. Full-service: strategy, content, technical implementation, and competitive intelligence.

Worth noting: retainers below £800/month for GEO work are almost always repackaged social media or SEO services. The economics simply do not support genuine AI search work at that price point.

Why Cheap GEO Is Usually Fake GEO

This is the part of the article where we get slightly uncomfortable. Good.

The GEO market is, at the moment, experiencing a gold rush. Every SEO agency with a blog post about ChatGPT has quietly updated their homepage to include "AI search optimisation" somewhere. Some are doing genuinely interesting work. Most are not.

Here is how to spot the fake version:

• It is entirely tool-dependent. If the deliverable is a report generated by a single SaaS platform with no human interpretation, that is not strategy. That is a subscription you could buy yourself.

• It ignores brand voice and entity positioning. Real GEO is about how AI systems understand and represent your brand. That requires understanding your brand first. If the agency has not asked about your tone of voice, your positioning, or how you want to be described, they are not doing GEO.

• It promises rankings. GEO is not about ranking positions. It is about citation frequency, brand mentions, and the accuracy of how AI describes you. Any provider promising "rank #1 in AI" is either confused or misleading you.

• It is priced like a commodity. Genuine AI search optimisation requires skilled human judgement: content strategy, copywriting, technical schema implementation, and ongoing analysis. None of that is cheap to do well.

The real risk of cheap GEO is not just wasted budget. It is actively bad brand representation in AI systems. If your content is structured poorly or your entity signals are contradictory, AI models will describe you inaccurately, or worse, not at all.

"If your brand isn't showing up in AI answers, you're invisible at the exact moment decisions are made." And if it is showing up incorrectly, that might be worse.

How decipher. Prices Its Engagements

At decipher., we do not believe in forcing every brand into the same package and hoping for the best. But we do have a clear entry point, because starting with a solid foundation is non-negotiable.

The AI Search Audit: where every engagement begins

Before any ongoing work, we run an AI Search Audit. This is a deep-dive diagnostic that covers:

• How AI systems currently understand (and misunderstand) your brand

• Where you appear, where you do not, and why

• Content gaps that are costing you citations

• Technical issues: schema, structured data, entity clarity

• A prioritised roadmap of what to fix first

The audit is a standalone deliverable. You can take it and act on it yourself. You can share it with your internal team. Or you can use it as the foundation for an ongoing engagement with us. No pressure either way.

This is the honest version of what an AEO audit cost should buy you: genuine insight, not a formatted checklist.

GEO Services retainer: for brands serious about ongoing visibility

For brands that want to move from audit to action and keep moving, our GEO Services retainer covers continuous AI search optimisation. This includes content development, structured data maintenance, topical authority building, and regular performance analysis across AI platforms.

Retainer scope and pricing are scoped to your brand's specific situation. We do not publish fixed monthly prices because the right level of work varies, and we would rather tell you what you actually need than sell you a package that does not fit.

What does not vary: the quality of thinking, the depth of the work, and the fact that we will not pretend a tool report is a strategy.

What to Ask Before You Sign Anything

Whether you are talking to decipher. or anyone else, these are the questions that separate genuine GEO providers from the rebadged variety.

Ask about their methodology, not just their deliverables. "What do you actually do?" is a better question than "What do I get?" A list of outputs tells you nothing. A clear explanation of how they analyse AI visibility, structure content for citation, and measure progress tells you everything.

Ask how they measure success. If the answer involves keyword rankings, bounce rate, or impressions, they are doing SEO with a GEO label. Real AI search optimisation measures brand mention frequency, citation accuracy, and share of voice in AI-generated responses.

Ask who does the work. AI visibility is a strategic and creative discipline. Ask whether the work is done by experienced strategists and writers, or by a junior team running automated reports. The answer matters enormously.

Ask what happens if AI platforms change. They will. Regularly. A good GEO provider has a clear position on how they adapt their approach as models update. If the answer is vague, that is a red flag.

Ask for examples of their own AI visibility. This one is slightly cheeky but entirely fair. Does the agency itself appear in AI answers for relevant queries? If not, why would you trust them to get you there?

GEO is not a commodity yet, even if some people are trying to sell it like one. The brands that invest properly now, with the right foundation and the right ongoing strategy, will be significantly harder to displace in AI search results than those who wait.

The cost of doing it properly is real. The cost of doing it badly, or not at all, is considerably higher.

Ready to find out exactly where your brand stands? Start with a decipher. AI Search Audit.