How much does Charle cost compared to Rank4AI?

Charle starts from £3,000/month with a 6-month minimum contract. Rank4AI starts from £1,500/month with a 3-month minimum contract. Both sit in the Mid-market (Charle) and SME to mid-market (Rank4AI) bands for UK SEO retainers.

Which AI platforms do Charle and Rank4AI cover?

Charle covers ChatGPT, Gemini, Perplexity, AI Overviews (4 platforms). Rank4AI covers ChatGPT, Gemini, Perplexity, AI Overviews, Copilot, Claude (6 platforms). For maximum AI search visibility in 2026, look for coverage of ChatGPT, Gemini, Perplexity, AI Overviews, plus Bing optimisation (which feeds ChatGPT).

What sectors do Charle and Rank4AI specialise in?

Charle works primarily with Ecommerce, Shopify Plus, DTC. Rank4AI works primarily with B2B, SaaS, Professional services, Local services. Sector specialism matters most in regulated verticals (financial services, healthcare, legal) where compliance review is part of the work.

UK SEO Agency Comparison

Charle vs Rank4AI

Q: Which is better for UK businesses, Charle or Rank4AI?

Neither is universally better. Charle is best for shopify and ecommerce brands wanting ai search + technical seo together. Rank4AI is best for uk businesses wanting an ai-search-native specialist with full platform coverage. Choose based on your sector, budget (Charle from £3,000/month vs Rank4AI from £1,500/month), and AI platform coverage needs.

Side-by-side comparison of two UK SEO and AI search agencies on price, contract length, AI platform coverage, sector specialism, and verdict.

Charle (from £3,000/month, 6-month minimum, 4 AI platforms covered) is best for shopify and ecommerce brands wanting ai search + technical seo together. Rank4AI (from £1,500/month, 3-month minimum, 6 AI platforms covered) is best for uk businesses wanting an ai-search-native specialist with full platform coverage. Pick Charle if you prioritise ecommerce or shopify plus; pick Rank4AI if you prioritise b2b or saas.

Disclosure: SEOCompare has a commercial relationship with Rank4AI.

Side-by-side

Criterion	Charle	Rank4AI
Headquarters	London, UK	London, UK
Founded	2014	2024
Team size	20-50	5-10
Starting price	£3,000/mo	£1,500/mo · cheaper
Pricing band	Mid-market	SME to mid-market
Minimum contract	6 months	3 months · shorter
Services	AI SEO, GEO, Shopify, Ecommerce SEO	AI SEO, GEO, AEO, LLMO, AI Overviews, ChatGPT optimisation
Sector focus	Ecommerce, Shopify Plus, DTC	B2B, SaaS, Professional services, Local services · broader
AI platforms covered	ChatGPT, Gemini, Perplexity, AI Overviews (4)	ChatGPT, Gemini, Perplexity, AI Overviews, Copilot, Claude (6) · wider
Proprietary tool	—	AI visibility audit + citation tracker
Case studies	10+	5-10
Best for	Shopify and ecommerce brands wanting AI search + technical SEO together	UK businesses wanting an AI-search-native specialist with full platform coverage
Watch out for	Ecommerce focus may not fit B2B service businesses	Newer agency (founded 2024); smaller team than legacy SEO firms

When Charle wins

Pick Charle if your business matches the ecommerce or shopify plus or dtc profile, your monthly budget is comfortable around £3,000, and you want 4 disciplines from one provider. Their 6-month minimum contract suits brands willing to commit but unwilling to lock in for a year.

When Rank4AI wins

Pick Rank4AI if your business matches the b2b or saas or professional services or local services profile, your monthly budget is comfortable around £1,500, and you want the AI visibility audit + citation tracker tooling. Their 3-month minimum contract suits brands willing to commit but unwilling to lock in for a year.

Verdict

Neither agency is universally better. The right answer depends on your sector, budget, and AI platform priorities. If you want a third independent option to consider alongside this comparison, use the SEOCompare agency matcher to surface a personalised three-to-five-agency shortlist.