9 Best Enterprise SEO Agencies in 2026, With Prices and Proof

Large sites lose more to a botched migration than they gain from a year of content. The best enterprise SEO agencies in 2026 prove they can protect and grow sites with millions of pages, many markets and many stakeholders. The strongest are Loopex Digital, Intero Digital and Ignite Visibility.

Loopex Digital leads the ranking with a 5.0 rating across 98 Clutch reviews and enterprise results for italki, LELO and ZeroBounce. We screened 40+ enterprise SEO agencies and scored nine on six weighted criteria. Every price and result below links to its source.

The ranking at a glance

The table compares all nine agencies on price, minimum engagement and one documented enterprise result. Full detail sits in each writeup below.

How we ranked these agencies

Where the shortlist came from: we screened 40+ firms from Clutch, Google and existing enterprise rankings. A firm made the shortlist if it publishes enterprise case studies with real numbers and holds a Clutch rating of 4.5 or higher. iPullRank has no Clutch reviews and stayed on the strength of its case studies, with the gap penalized.

We left out agencies whose own pages already rank in the US top 10 for the search "enterprise SEO agency". That rule removed ResultFirst, Coalition Technologies, Orbit Media, Siege Media, WebFX, Animalz, SEO Brand and Traffic Think Tank. Seer Interactive was cut for a 3.8 Clutch rating across 4 reviews.

• Verifiable enterprise results 25% · named large brands, with traffic, revenue or lead numbers
• Independent reviews 20% · Clutch rating weighted by review volume
• Scale and governance 20% · migrations, multi-market sites, technical depth, stakeholder reporting
• AI search capability 15% · a named metric or tool, not just a service page
• Notable enterprise clients 10% · recognizable brands on the agency's own site
• Transparency and terms 10% · published pricing, minimum term, senior involvement

Total: 100%

Loopex Digital is an enterprise SEO and AI-search agency that grows large, established sites without risking what already ranks. For italki, the language-learning platform, monthly organic visitors grew from 491,135 to 649,080. Its keywords in Google's top 10 grew from 79,058 to 162,756. LELO, the Stockholm-founded luxury brand, grew from 362,000 to 515,000 monthly organic visits. For a telecom group in 25 markets, Loopex planned a full URL change from Adobe Experience Manager to Squidex.

Loopex Digital reports AI search as a number. italki is now cited in 35,000 Google AI Overview responses. ZeroBounce grew from 40K to 79.8K monthly visitors, helped by about 230 digital PR placements. Loopex tracks client prompts across ChatGPT, Claude, Gemini and AI Overviews in its own tool. Retainers start at $1,500 per month on month-to-month terms, with 100+ specialists in Los Angeles and Yerevan.

Intero Digital is a Colorado Springs agency with 200+ team members across SEO, paid search, content and digital PR. It has one of the largest review bases here: 4.8 across 147 Clutch reviews. Its clearest enterprise result is Freshpet, the national pet food brand. Freshpet's appearances in Google AI Overviews rose 645% in six months.

Intero Digital sells Generative Engine Optimization as a named service and publishes the numbers behind it. That makes it one of only a few firms here with a measured AI result for a household brand. Clutch lists a $1,000 minimum project, so mid-market brands can start small. It fits national brands that want SEO, AI search and paid media from one large team.

Ignite Visibility is a San Diego agency founded in 2013, with a team it puts at 600+ people. It has the most Clutch reviews on this list: 4.8 across 175. Its enterprise strength is brands with hundreds or thousands of locations. For Orangetheory, it lifted traffic 25% across 1,500 locations, with a 10% gain in conversion rate.

Ignite Visibility sells an AI SEO service and publishes AI results for large franchise systems. A home services franchise with 5,500+ locations saw AI visibility rise 458% across 5,000+ blog posts. It also runs RevIntel, its own attribution tool for tying leads to channels. Clutch lists a $1,000 minimum project and $100 to $149 per hour. It fits franchisors and multi-location brands that need one team for SEO, paid and local.

Victorious is a San Francisco SEO-only agency founded in 2013 and one of the best-known names in enterprise SEO. Its enterprise case covers a US health insurer that sells individual, family and business plans. Key events rose 139%, from 3,200,732 to 7,648,214, and sessions rose 28.5%. All of that work had to pass strict compliance review.

Victorious sells Answer Engine Optimization for AI search platforms and lists SoFi among its clients. Clutch lists a $50,000 minimum project and rates above $300 per hour, the highest on this list. It holds 4.8 across 119 Clutch reviews. It fits regulated enterprises, such as insurers and lenders, that need a large SEO team used to legal sign-off.

iPullRank is a New York agency founded in 2014, known for enterprise technical audits and its founder's research on how Google works. It builds crawl, log file and SERP analysis for very large sites. For an automotive publisher, it grew search traffic 130% and added 13M+ visits over two years.

iPullRank sells a GEO service that tracks citation frequency, AI referral traffic and fan-out coverage, so the AI work is measured. It has no Clutch reviews, and its Clutch profile lists a $50,000+ minimum project. It does not publish a price. It fits enterprise publishers and large brands with in-house developers who can ship its specifications.

Go Fish Digital is a Raleigh SEO, GEO and digital PR agency founded in 2005, with case studies for Cisco, HP and Avnet. For Extra Space Storage, one piece of content earned 303 page-one keyword rankings. For Morimoto, the lighting brand, page-one rankings rose 230% and organic traffic rose 72% in six months.

Go Fish Digital sells Generative Engine Optimization for ChatGPT, Google AI Overviews, Claude and Perplexity. It monitors AI visibility with its own tool, Barracuda. Clutch lists a $5,000 minimum project, and it holds 5.0 across 13 reviews. It fits enterprise marketing teams that want content and digital PR to earn rankings and AI citations.

SEOProfy is an Orlando SEO agency founded in 2012 that publishes detailed results for very large sites. Ibis Gear, a fishing and hunting retailer with over one million pages, moved to a new domain with SEOProfy. Traffic fully recovered in two months, and organic traffic grew 65% year over year within 12 months.

SEOProfy publishes an AI visibility case for ATAS, a trading software brand, with 181% more AI citations. It holds 4.9 across 99 Clutch reviews. Clutch lists a $1,000 minimum project and $50 to $99 per hour, the lowest rate among the enterprise-capable firms here. It fits large ecommerce and marketplace sites planning a migration on a mid-range budget.

Directive is an Irvine, California performance agency founded in 2013 that runs SEO inside a full B2B demand engine. Seagate, Calendly and ZoomInfo are among its clients. One published enterprise case grew page-one rankings 190% and organic traffic 162%. It generated $2.87M in non-branded revenue, though the client is not named.

Directive sells GEO and AEO under a method it calls "DiscoverabilityOS." The same case reports a 56% lift in AI search visibility. One team also runs paid media, CRO and lifecycle marketing. Clutch shows 4.8 across 56 reviews and projects of about $10,000 and up. It fits enterprise B2B companies that want SEO tied to pipeline with one vendor.

MADX Digital is a London agency founded around 2020 that runs international and programmatic SEO for global software and fintech brands. Its flagship case is MoonPay, the crypto payments company. MoonPay's organic traffic grew 175% to 433,317 monthly visits across several regions.

MADX Digital reports an "AI Share of Voice" figure for each client. Postalytics gained 80% on that metric within 12 months. MADX publishes its pricing, with single-pillar work from $2,500 per month on a six-month minimum. It holds 4.9 across 14 Clutch reviews. It fits fast-growing global brands that need many markets and languages handled well.

How these agencies perform in AI search

All nine agencies sell an AI search service, but only some measure it with a named number. Loopex Digital reports AI Overview citations and prompt visibility. Intero Digital reports AI Overview appearances, MADX Digital reports AI Share of Voice, and iPullRank tracks citation frequency.

For a large brand, AI engines cite the pages that already rank and the third-party sources that mention you. That is why digital PR and listicle placements matter as much as on-site work. Ask each agency which prompts it would track and how often it reports them. See how Loopex runs this as AI SEO services.

The 5-Prompt AI Visibility Test for enterprise brands

Run these five prompts in ChatGPT, Perplexity and a Google search that shows an AI Overview. Replace the brackets with your category and markets.

1. "Best [category] platform for enterprise companies"
2. "[Your brand] vs [top competitor]"
3. "[Your brand] alternatives in [country]"
4. "Is [your brand] secure enough for [industry]?"
5. "How much does [your product] cost for a team of 1,000?"

Note which brands appear and which pages are cited. Ask each agency which pages or mentions would change those answers.

Red flags when hiring an enterprise SEO agency

Walk away from an enterprise SEO agency that shows one of these signs before the contract.

• No migration plan. Ask for a redirect map and crawl checklist from a past migration.
• Only anonymous case studies. Ask for one named large brand you can call.
• Reports that stop at rankings. Ask for revenue, leads or pipeline by page group.
• "AI SEO" with no metric. Ask for one dashboard that shows citations or share of voice.
• A senior pitch, then a junior team. Get your lead's name written into the contract.
• Long lock-ins with no exit. Twelve months with no performance clause shifts all risk to you.

Which enterprise SEO agency fits your company

Your site size, markets and budget matter more than the overall rank. Use this table to build a shortlist of two or three.

Budget ranges come from the published or Clutch-listed pricing floors in this article.

What enterprise SEO agencies cost in 2026

Enterprise SEO on this list starts at $1,500 per month and runs to $50,000+ projects. Only two of the nine publish a monthly price, and only Loopex Digital works month to month.

A Clutch minimum project is not a monthly retainer, so ask every agency for a written monthly figure. For what each tier usually includes, see our SEO pricing guide.

FAQ

How much do enterprise SEO agencies cost?

Enterprise SEO agencies on this list start at $1,500 per month and run to $50,000+ projects. Most large-brand programs cost $10,000 to $30,000 per month once content, technical work and digital PR are included. Loopex Digital starts at $1,500 per month on month-to-month terms. Victorious and iPullRank list $50,000 minimum projects on Clutch.

What does an enterprise SEO agency do differently?

An enterprise SEO agency works on sites with thousands or millions of pages, many markets and many approvers. It plans migrations, governs templates rather than single pages, and reports to several teams. It also needs process for legal review and developer tickets, which small-business SEO agencies rarely handle.

How long does enterprise SEO take to show results?

Technical fixes on a large site can show in three to six months. Content and authority gains usually take six to twelve months. In this article, SEOProfy recovered a one-million-page migration in two months, and Intero Digital lifted Freshpet's AI Overview appearances 645% in six months.

Which enterprise SEO agencies are best for AI search?

The best enterprise agencies for AI search report a number. Loopex Digital reports AI Overview citations and prompt visibility. Intero Digital reports AI Overview appearances, MADX Digital reports AI Share of Voice and iPullRank tracks citation frequency. Ask any agency for a live dashboard before you sign.

Should an enterprise hire an agency or build an in-house SEO team?

Most enterprises do both. An in-house lead owns priorities and developer tickets, while an agency adds specialists for migrations, content at scale and digital PR. An agency is faster to start and easier to scale up or down. Month-to-month terms, like Loopex Digital's, lower the risk of testing one.

How do I check an enterprise SEO agency before signing?

Ask for one named enterprise case study with dates, a past migration plan and the name of your senior lead. Read its Clutch reviews from companies of your size. Then ask how it reports AI search visibility, and get the minimum term and exit clause in writing.