Say a buyer types into ChatGPT asking for three tools in your category. Your brand doesn’t show up in the answer. Weird thing is, your Google rankings might look perfectly healthy — yet that shortlist got built somewhere you never thought to check.
That’s exactly why UK SaaS marketing leads are now setting aside budget for generative engine optimisation, or GEO, as everyone’s started calling it.
We looked at five agencies: what they say they deliver, what they charge, and how past clients rate them. The goal here is simple — give you a shortlist before you even pick up the phone for that first sales call.
- MADX Digital suits teams wanting technical, content and off-site work under one roster.
- Omniscient Digital suits funded B2B teams that want GEO tied to pipeline.
- Siege Media suits research-led content with regular page refreshes.
- Skale suits teams adding off-site AI brand mentions to an existing SEO programme.
- iPullRank suits organisations that want staged technical planning first.
What Does GEO Work Cover For A SaaS Brand?
GEO is about getting your brand named inside AI-generated answers. Not just ranked somewhere in a list of blue links — actually mentioned, actually cited.
Most programmes stitch together four workstreams. There’s content built to answer buyer questions in plain language. Technical fixes so AI crawlers can actually read your pages properly. Mentions planted on the third-party sites these engines like to cite. And prompt tracking, so you can tell whether any of it is working.
Here’s the catch, though: coverage isn’t uniform across engines. An agency reporting on ChatGPT performance won’t necessarily say a word about Perplexity or Gemini. And Google’s AI Overviews? Those usually get their own separate line in the report — a different beast entirely.
For context on scale, Gartner has projected that traditional search engine volume could fall by roughly 25% by 2026 as users shift toward AI chatbots and assistants for answers. BrightEdge research has also found that AI Overviews now appear on a sizeable share of competitive, informational search queries. Numbers like these are part of why GEO stopped being a nice-to-have and started showing up as its own line item in marketing budgets.
How We Picked
We compared SaaS relevance, technical and content scope, off-site work, platform-specific measurement, public review records, and how clearly each agency publishes pricing. The service descriptions here all come straight from each agency’s own pages — we didn’t paraphrase anyone’s pitch into something flattering. Clutch ratings, worth noting, cover reviewed work generally. They’re not GEO-outcome scores specifically.
All figures were checked on 11 November 2026. Nobody hired, tested, or audited any of these five agencies for this piece, so treat what follows as a comparison of published scope — not an independent performance ranking. That distinction matters more than people give it credit for.
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The Five Agencies At A Glance
| Agency | Base | Published starting price | Clutch record | Best for |
| MADX Digital | London, UK | USD 5,500 a month (GEO plans) | 4.9 from 14 reviews | One team across technical, content and placements |
| Omniscient Digital | Austin, US | USD 120,000 a year (full service) | 4.8 from 6 reviews | Pipeline-led B2B programmes |
| Siege Media | Austin, US | USD 8,000 a month (content marketing minimum) | 4.9 from 48 reviews | Research-led content and refreshes |
| Skale | London, UK | USD 4,000 a month (full service) | 4.9 from 21 reviews | Off-site AI brand mentions |
| iPullRank | New York, US | Not published (USD 50,000 minimum project on Clutch) | Not yet reviewed | Staged technical planning |
1. MADX Digital
Pros
- A four-part GEO system: entity-first content, citation-layer schema, a consistent brand knowledge base and off-site signal building
- Buyer-prompt tracking with share of voice against competitors, reported monthly
- Placements in the third-party guides and listicles AI engines actually cite — 10 a month on its Authority and Growth plans
Cons
- Engine coverage depends on the plan you pick: Authority tracks ChatGPT, Google AI Overviews and Claude weekly, but Perplexity and Gemini tracking only kicks in on Growth
Why We Picked MADX Digital
MADX is our top pick for teams wanting technical, content and off-site work run by a single team. Its Growth and Scale plans include weekly website optimisations, shipped by its own staff rather than dumped on you as a to-do list. For a wider longlist, MADX Digital — a SaaS AI search agency — also publishes a comparison of 14 GEO and AEO providers, and to its credit, it openly flags where it sits on that list too. MADX holds a 4.9 rating from 14 Clutch reviews.
MADX Digital Pricing
GEO plans run USD 5,500, USD 9,500 or USD 14,500 a month, with custom Enterprise pricing above that and a one-off growth plan at USD 4,500. Plans bill monthly, either on a 12-month term or a rolling contract with a three-month minimum.
2. Omniscient Digital
Pros
- GEO engagements open with a current-state analysis, competitor and citation analysis, and a GEO roadmap
- Execution covers content production, brand mentions and technical implementation
- Ongoing monitoring of LLM mentions and visibility
Cons
- Full-service engagements start at USD 120,000 a year — a big ask for what’s essentially a narrow pilot
Why We Picked Omniscient Digital
We picked Omniscient for B2B software teams that want GEO judged on pipeline, not vanity traffic numbers. Its GEO service is really aimed at CMOs and SEO leads looking to evolve an existing programme to cover AI search. Worth flagging: all its offices sit in the US, so UK teams should nail down working hours and reporting rhythm early, before anything gets signed. Omniscient holds a 4.8 rating from 6 Clutch reviews.
Omniscient Digital Pricing
Full-service engagements start at USD 120,000 a year, which its own service pages also express as USD 10,000 a month. Worth asking upfront what share of that actually goes toward GEO work specifically. Whatever you decide, run the monthly figure through a cash flow forecast first, so finance isn’t surprised by a commitment of that size.
3. Siege Media
Pros
- Proprietary research reports and digital PR aimed squarely at the pages AI engines cite
- A disclosed, brand-forward presence on Reddit and other buyer communities
- DataFlywheel technology that refreshes pages quarterly, sometimes faster
Cons
- Its GEO page asks clients to commit to six months or more. Short experiments just aren’t a great fit here.
Why We Picked Siege Media
We picked Siege for research-led content programmes, plain and simple. Every GEO engagement comes with monthly tracking of LLM share of voice, citations earned, and AI-referral traffic. The team works out of US offices, so UK buyers should agree meeting times during scoping rather than leaving it to chance. Siege holds a 4.9 rating from 48 Clutch reviews — the strongest review volume on this list, for what it’s worth.
Siege Media Pricing
Siege publishes a content marketing minimum of USD 8,000 a month on a 12-month contract, with a 30-day out clause built in. That’s not a standalone GEO fee though, so request a separately scoped GEO proposal before assuming it’s included.
4. Skale
Pros
- A dedicated AI brand mentions service sitting alongside link building and content production
- Prompt and intent mapping paired with citation outreach and reporting
- A London-based team working only with SaaS and tech companies — no generalists here
Cons
- If you buy the mentions service on its own, confirm exactly how much technical work and content production is bundled in
Why We Picked Skale
We picked Skale for teams wanting off-site support next to an SEO programme they already run. It treats GEO and SEO as one connected system, and reports in SQLs, pipeline and MRR rather than just traffic — which, let’s be real, is the metric that actually matters to most finance teams. That revenue-first reporting suits early-stage SaaS firms, where what makes a successful startup business often comes down to showing investors that growth is repeatable.
Skale reports that motion design client Jitter moved from 22% to 55% AI brand coverage in four months. That’s a sizeable jump, though it’s a single case study, not a guaranteed outcome. Skale holds a 4.9 rating from 21 Clutch reviews.
Skale Pricing
Skale’s own agency roundup lists full-service packages starting at USD 4,000 a month. Request a scoped quote if you’re after the AI brand mentions service specifically.
5. iPullRank
Pros
- Stage-based plans for Emerging, Growth and Elite organisations
- A measurement plan with prompt-level tracking and monthly reporting at every single stage
- Implementation audits that check whether recommendations actually made it to production, not just sat in a deck
Cons
- Its Conversation Engineering programme — link building, digital PR, community work — is offered only to Elite organisations
Why We Picked iPullRank
We picked iPullRank for technical planning before you commit to a wider programme. Its Growth tier adds a 6-to-12-month strategic roadmap and a conversational search competitive analysis. It ranked No. 2,647 on the 2026 Inc. 5000, which, to be clear, measures revenue growth rather than GEO effectiveness — an interesting data point, but not really the metric you’re shopping for here. iPullRank has no Clutch reviews yet.
iPullRank Pricing
No GEO fee is published on its service pages. Its Clutch profile lists a minimum project size of USD 50,000, for reference.
What Should You Agree Before Signing?
Ask every shortlisted agency for the same four things: the prompt set it’ll track, the UK locale it’ll test in, who actually owns delivery on each fix, and a baseline taken before any work starts. Without a shared baseline, honestly, two proposals can’t be compared fairly — you’re just comparing vibes at that point.
Agree on separate baselines for ChatGPT, Perplexity and Gemini. Report Google’s AI Overviews on their own line too. Keep a classic Google baseline alongside them, and a simple list of tools to help businesses get on Google is a handy reference for the traditional-search side. And define what counts as a mention, a citation, and a recommendation — agencies use these words differently, more often than you’d think.
One more thing worth remembering: a citation only earns you a visit. The page a buyer actually lands on still has to convert, which is exactly why landing pages that deliver on the promise that won the click deserve a spot in your GEO plan too.
Conclusion
Each agency here fits a different starting point, and that’s probably the main thing to take away. MADX Digital suits a UK SaaS team wanting one roster across technical, content and placement work. Omniscient suits pipeline-led programmes. Siege Media leans research-led content. Skale covers off-site mentions. iPullRank handles staged technical planning.
Whichever one you shortlist, ask for a proposal naming engines, prompt sets, owners and reporting cadence. Those details genuinely tell you more than any headline rate ever will.
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FAQ
Q1. What Is Generative Engine Optimisation?
GEO is the practice of making your brand easy for AI engines to understand, cite and recommend inside their answers.
Q2. Do GEO Agencies Track ChatGPT, Perplexity And Gemini Equally?
Not always. MADX Digital, for example, only tracks Perplexity and Gemini from its Growth plan upward — so confirm engine coverage in writing before you sign anything.
Q3. How Long Does GEO Take To Show Results?
MADX Digital says content and citation signals typically take 2 to 4 months. Siege Media puts citation share building over 3 to 6 months instead.
Q4. How Much Does A SaaS GEO Agency Cost?
Published starting points among these five range from USD 4,000 a month at Skale up to USD 120,000 a year at Omniscient Digital — quite a spread, so scope matters as much as the headline number.
Q5. Can An Agency Guarantee AI Citations?
No, and be wary of anyone who says otherwise. MADX Digital itself states that nobody controls what an AI model recommends — so treat any guaranteed-citation promise with real caution.
Disclaimer: The information provided in this technology and AI search overview is strictly for general informational purposes only and does not constitute promotional endorsement, technical certification, or commercial recommendation. Because artificial intelligence platforms, search algorithms, and agency service offerings evolve rapidly, readers should independently verify all technical capabilities and pricing details and seek professional advice before making software or vendor commitments.
