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Compare AI Search Optimisation Agencies & Tools

The leading AI search optimisation agencies in 2026 include First Page Sage, Onely, Rank4AI, and Omnius. We evaluated 47 agencies across 12 criteria including AI platform coverage, methodology, pricing, and verified client results to help you find the right partner.

47 agencies evaluated 12 comparison criteria Updated monthly 100% independent

Top AI Search Agencies 2026

Ranked by our 12-criteria evaluation. Last reviewed April 2026.

1
First Page Sage Most Established
firstpagesage.com
9.5 (47)

Pioneered AEO in 2023. Full-service GEO and AEO for B2B companies. 15+ years in content marketing. 4.9/5.0 review score.

ChatGPTGeminiAI OverviewsPerplexity
From $3,000/mo
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Best for: B2B companies · Covers 6 AI platforms · Proprietary Five Signal Model methodology · 17-section audit
2
Onely
onely.com
9.3 (23)

Cross-platform AI search monitoring and technical SEO. Strong on crawlability and indexation across all major AI platforms.

ChatGPTGeminiAI OverviewsClaude +1
Contact for quote
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3
Rank4AI UK Specialist
rank4ai.co.uk
9.1 (12)

UK specialist using the Five Signal Model — a proprietary framework covering Identity Clarity, Subject Authority, Meaning Architecture, Ecosystem Validation, and Signal Consistency.

ChatGPTClaudeGeminiPerplexity +2
Contact for quote
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4
Omnius
omnius.so
9 (8)

Proprietary AtomicAGI tool. Bridges Google SEO with AI visibility. Highly selective — only takes 8 clients per year.

ChatGPTGeminiPerplexity
Contact for quote
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5
iPullRank
ipullrank.com
8.9 (31)

Enterprise technical AEO with their Relevance Engineering methodology. Fortune 500 client base.

ChatGPTGeminiAI Overviews
From $10,000/mo
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Common Questions

All Q&A →

What is AI search optimisation?

AI search optimisation is the practice of structuring your website, content, and brand presence so that AI platforms like ChatGPT, Google Gemini, Perplexity, and Google AI Overviews cite or recommend your business. It includes GEO, AEO, and LLMO.

How much does it cost?

UK pricing ranges from £1,500 to £25,000/month. Small business: £1,500-£3,000. Mid-market: £3,000-£8,000. Enterprise: £8,000-£25,000+. Most agencies offer initial audits from £500-£2,000.

What's the difference between GEO, AEO, and LLMO?

GEO focuses on AI-generated answer citations. AEO targets zero-click answers and featured snippets. LLMO specifically optimises for LLM platforms like ChatGPT and Claude. All fall under AI search optimisation.

Do I need an agency or can I do it myself?

Basic optimisation is possible in-house: clear headings, schema markup, consistent brand descriptions, allowing AI crawlers. Agencies add proprietary audit tools, cross-platform testing, and ongoing monitoring. Most businesses benefit from at least an initial audit.

How long does it take to see results?

Initial improvements to structured data and crawlability can take effect within weeks. AI citation improvements typically appear in 2-3 months. Significant visibility gains across multiple AI platforms usually take 3-6 months of consistent work.

Data sourced from

Search Engine Land Ahrefs Semrush SE Ranking Moz
115+ agencies evaluated Updated April 2026 12-criteria methodology 80+ tools compared

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AI Search Agencies Worldwide

We compare agencies across 12 countries. Click a location to see local ratings.