The best B2B SEO agencies in 2026 are Stratabeat for B2B tech, fintech, and financial services companies, Gorilla 76 for midsized manufacturers, and RevenueZen for professional and business services firms that want published pricing. OuterBox, Weidert Group, Sure Oak, and Marcel Digital round out the seven agencies that cleared my scorecard.

I am not on this list, and I do not run an agency. I run SEO and AI search strategy for B2B accounts, and I scored every agency below the same way: from public evidence on its own site, its individual case study pages, and its Clutch profile, all checked in November 2026. The scores are my opinion based on that evidence. If an agency has public proof I missed, it can send it through my contact page and I will re-score it. More vetting guides live in the SEO services library.

Most lists of the best B2B SEO companies are written for software companies. Onely counted the entries in ten published lists in October 2026: 64 of 105 were described by software, SaaS, or tech clients, and 7 of 105 by manufacturing or industrial clients. If you sell software, my list of SaaS SEO agencies covers that market. Everything below is grouped by how your customers buy: through engineers and RFQs, through a partner they trust with their money, or through a tech buying committee.

A list like this matters more than it used to, because AI answers are built from them. In a citation export across six B2B SaaS accounts I track, 88.7% of the sources AI answers cited were independent third parties, and only 2.6% were the brand’s own site. When a buyer asks ChatGPT for a B2B SEO agency, the answer comes from lists and reviews, which is where ChatGPT gets its information.

The best B2B SEO agencies at a glance

Minimum engagement is the smallest total budget the agency reports on Clutch for a whole engagement, which can span several months. Hours are an estimate: a $5,000 monthly budget divided by the agency’s Clutch hourly rate. The industry column comes from each agency’s Clutch profile or its own ideal-client page, so you can see whom it serves before you call.

AgencyBest forMy scoreWho it servesPublished pricing or minimum engagementHours $5,000 a month buysEngineers on staff
StratabeatB2B tech, fintech, and financial services87IT 45%, medical 20%, business services 15%From $8,000 a month17 to 25Web design in its larger packages
Gorilla 76Midsized manufacturers76B2B manufacturers with $15M to $200M in revenue$12,000 road map, no further commitmentRate not listedYes, website design and development
RevenueZenProfessional and business services, published tiers75IT 60%, business services 30%$3,000 to $15,000 a month25 to 33Not stated (SEO only)
OuterBoxManufacturers and distributors that also sell online68Manufacturing 35%, ecommerce 35%, business services 15%$1,000+ minimum engagement25 to 33Yes, web development team
Weidert GroupIndustrial and financial firms on HubSpot68Manufacturing 35%, financial services 30%, business services 20%Programs $15,000 to $30,000 a month25 to 33Yes, website design and development
Sure OakFinancial, insurance, and professional services67Financial services 30%, business services 20%, insurance 15%$5,000+ minimum engagement25 to 33Not stated
Marcel DigitalLogistics and B2B services that want AI search measured66Medical 20%, financial services 20%, business services 15%$5,000+ minimum engagement17 to 25Yes, web development is 40% of its work

How I scored these B2B SEO agencies

Every agency was scored out of 100 on public evidence only. If something was not public, it scored zero on that line, and I say “not public” so you know what to ask for.

CriterionPointsWhat earns full marks
Proof of outcomes25B2B case studies with leads, pipeline, or revenue, a baseline, and dates
B2B depth15Most of the portfolio in B2B, in the kind of business the agency says it serves
Senior attention15Real hours on your account at a typical budget, and a clear picture of who does the work
Pricing and terms10Published pricing or minimums, clear contract terms, and a clean exit
Strategy10A published, specific method or original research
Reporting10Reports leads, pipeline, or revenue tied to the CRM
AI search10A stated way of measuring AI visibility: which prompts, which engines, named or cited
Reviews5Verified client reviews, recent and plentiful

Four things disqualify an agency outright, because each one has cost my clients money before: guaranteed rankings or guaranteed placement in AI answers, cheap monthly link packages, no verifiable case study anywhere, and growth claims with no baseline and no business number (the standard I hold my own SEO case studies to). These come straight from the red flags in my guide on how to choose an SEO agency.

On time and senior attention. No agency publishes how many hours you get, so I estimate it from each agency’s Clutch rate. I carry five accounts as a senior strategist, which leaves me about a day a week for each, and that is the benchmark I hold agencies to. Stratabeat is the only agency here that publishes an account cap.

Engineers on staff. B2B sites live and die on templates, forms, and CRM integrations. Whether an agency has its own developers decides whether it ships those fixes or hands your team a list. I report it for every agency, sourced, and leave it out of the score, because the right answer depends on your own team.

What I could not see. Employee reviews on Glassdoor are a useful signal for how stretched account teams are, and I will add them where I can read them in full. Several agencies do not publish pricing. Clutch carries the most detailed B2B SEO agency reviews, and I read the individual case study pages, where most of the dates and baselines live.

Here is the full breakdown, so you can check my work or re-weight it for your situation.

AgencyProof (25)Depth (15)Attention (15)Pricing (10)Strategy (10)Reporting (10)AI search (10)Reviews (5)Total
Stratabeat221014108109487
Gorilla 761415999910176
RevenueZen1813886107575
OuterBox1912836105568
Weidert Group18111010690468
Sure Oak171282986567
Marcel Digital18972899466

Best B2B SEO agencies for manufacturers and industrial companies

Manufacturers sell to engineers, buyers, and distributors who search by spec, part, and application, then send an RFQ. An agency that knows that path writes for it, and an agency built on the software playbook writes demo pages nobody in your market asks for.

Gorilla 76

Best for: midsized US manufacturers that want a plan before they commit to a retainer.

What the evidence shows: Gorilla 76 describes its best-fit clients as “midsized B2B manufacturing organizations ($15-200M in annual revenue) doing business in the United States.” Its services page says every engagement starts with a Road Map priced at $12K “regardless of company type or size. And no further commitment is required,” and that most clients running full programs spend $200K to $250K a year including media, or $50K to $100K in the first year.

Its Davron case study covers an industrial oven manufacturer that started in 2020: the client says it used to win “one to two customers a year” and reached eight new customers after the first 12 months, and in 2021 top-line revenue grew 20% with $9M in pipeline sourced through marketing. Its AI search optimization page scores 15 pages against seven checks, tests real buyer prompts in ChatGPT, Claude, Perplexity, and Gemini, and records whether the brand is named and recommended, cited only, used without credit, or absent, plus who got recommended instead. On Clutch, it lists a $10,000+ minimum engagement, 10 to 49 employees, a 2006 founding in St. Louis, and a 5.0 rating from one review.

My take: in my view, this is the best AI search measurement method on the list, and a paid road map with no commitment is the diagnose-first structure I recommend to every B2B buyer.

The catch: its two published case studies date from 2020 and 2021 and blend SEO with paid media, and Clutch carries a single review.

Score: 76/100.

OuterBox

Best for: manufacturers and distributors that also sell online and want leads tracked to closed deals.

What the evidence shows: OuterBox runs manufacturing SEO alongside a web development service. Its specialty metals case study covers two sister distributors that launched new sites in early 2024: comparing the first and second halves of 2024, organic traffic rose 570% and 1,053%, and quality leads tracked in its LOOP platform rose 465% and 3,166%. LOOP Analytics is its own lead tracking platform, which it says traces CRM deals back to the first click. On Clutch, it lists a $1,000+ minimum engagement, a $150 to $199 rate, 250 to 999 employees, a 2004 founding in Copley, Ohio, SEO as 45% of its work, manufacturing and ecommerce at 35% each, and a 5.0 rating from 93 reviews.

My take: closed-loop lead tracking is what a B2B buyer should demand, and OuterBox built its own. Ninety-three reviews also give you more signal than anyone else here.

The catch: the specialty metals comparison starts right after two new sites launched, so the baseline is low. Pricing is not public, and its AI revenue case study comes from retail, with no B2B AI search method published.

Score: 68/100.

Weidert Group

Best for: industrial and financial services companies on HubSpot that want SEO inside a full inbound program.

What the evidence shows: Weidert Group has worked from Appleton, Wisconsin, since 1980. Its pricing page says “our prices aren’t a mystery. We don’t lock clients into contracts,” and lists marketing and sales programs at $15K to $30K a month, websites at $50K to $100K+, and HubSpot onboarding from $3,400. Its ESOP Partners case study, a financial services firm focused on employee stock ownership plans, reports monthly MQLs up 312.5% and SQLs up 983.3% from January to April 2023 against January to April 2024, after a website rebuild with SEO, plus 55% more consulting engagements over 10 months. On Clutch, it lists a $10,000+ minimum engagement, a $150 to $199 rate, 10 to 49 employees, manufacturing at 35% and financial services at 30% of its industries, and a 4.8 rating from 12 reviews. An August 2025 reviewer at Viking Masek wrote that important keywords “moved from invisible to first page in six months.”

My take: published prices with no contracts is the most buyer-friendly structure in this group, and an SQL count is the right number to report.

The catch: SEO is 10% of its Clutch service mix, its programs start well above the $5,000 benchmark, and I found no AI search service.

Score: 68/100.

Best B2B SEO agencies for professional, financial, and business services

Professional and financial services firms sell trust. Buyers search the problem, read the firm’s thinking, then check its people and its locations, so the work leans on expert content, local pages, and authority.

RevenueZen

Best for: B2B service companies that want published tiers and SEO reported in pipeline dollars.

What the evidence shows: RevenueZen publishes six pricing tiers from $3,000 to $15,000 a month and lists the deliverables in each. The $3,000 tier includes “AI brand monitoring + monthly written report,” and the top tier adds “Monthly GEO monitoring + competitive AI citation tracking.” Its Pritchard Industries case study reports $2.2M in pipeline from SEO within six months, with the client describing a move “from zero to 10+ qualified leads per week” and four closed deals. Its Blueback Global case study, a provider of international entity and outsourced employer services, reports $80K in annual recurring revenue from deals closed through the website in the first six months. On Clutch, it lists a $5,000+ minimum engagement, a $150 to $199 rate, 10 to 49 employees, a 2017 founding in Portland, Oregon, SEO as 100% of its work, IT at 60% and business services at 30% of its industries, and a 4.9 rating from 38 reviews, including an August 2024 trucking and logistics reviewer who reported a 50% increase in lead volume.

My take: pipeline in dollars on the case study pages and prices on the website make RevenueZen the easiest agency here to evaluate before a call.

The catch: the case studies give the length of each engagement but not the year, and Clutch shows 70% of its clients are small businesses under $10 million, so a larger firm should ask for a reference at its size.

Score: 75/100.

Sure Oak

Best for: financial services, insurance, and professional services firms that need authority and links as much as content.

What the evidence shows: Sure Oak, a Brooklyn B2B SEO firm founded in 2017, published a B2B packaging case study for Zenpack running from March 2022 to June 2023: conversions up 1,122%, organic sessions up 87%, and top-three keywords up 1,400%. In October 2026 it published a study of 55 banks, credit unions, and fintech lenders, built on the top 500 ranking keywords for each. Its AI search optimization service is measured by brand mentions, AI citations, conversion rates, branded search, and AI referral traffic. On Clutch, it lists a $5,000+ minimum engagement, a $150 to $199 rate, 10 to 49 employees, SEO as 70% of its work, financial services at 30% and insurance at 15% of its industries, and a 4.9 rating from 44 reviews, including an October 2026 reviewer at ATLAS CPAs who reported more organic impressions, sessions, and inquiries from prospective clients.

My take: original research in the vertical it serves is a strong point-of-view signal, and its reviews are recent.

The catch: pricing is not public, most of its case studies are undated, and its AI search measurement names outcomes without describing a fixed prompt set.

Score: 67/100.

Best B2B SEO agencies for B2B tech, fintech, and logistics

B2B tech and logistics buyers can now ask AI tools for a vendor shortlist, so the two agencies in this group measure AI visibility alongside organic leads.

Stratabeat

Best for: B2B tech, fintech, and financial services companies with at least $8,000 a month that want a senior strategist and AI search tracked.

What the evidence shows: Stratabeat publishes its pricing: Grow from $8K a month, Scale at $15K to $21K, and Dominate from $22K, with “No long-term contracts… if you don’t love your results after 6 months, you can let us go at any time with 30-day notice.” Its B2B SEO page states “only 2–4 accounts per strategist.” Its TreviPay case study, a B2B payments company, starts from less than 1.3% ChatGPT visibility across tracked non-branded prompts and reports that, nine months in, quarterly organic and LLM qualified leads reached nearly four times the prior quarter’s all-channel total. Its Masttro case study, an engagement that began in January 2025, reports organic MQLs up 222% over the previous four-month period. On Clutch, it lists a $5,000+ minimum engagement, a $200 to $300 rate, 10 to 49 employees, a 2011 founding in Burlington, Massachusetts, IT at 45% of its industries, and a 5.0 rating from 15 reviews. A March 2025 reviewer reported Q4 form submissions and website opportunity revenue up 500% year over year.

My take: a published account cap and a 30-day exit after six months address the two risks I warn about most, thin hours and lock-in, and an AI visibility baseline with a date is rare.

The catch: its pricing page says it is “100% focused on” SaaS and tech companies, so a manufacturer or services firm should ask for a case study outside software. Its $8,000 floor is the highest on this list.

Score: 87/100.

Marcel Digital

Best for: logistics and B2B services companies that want AI search measured against named competitors, with developers in house.

What the evidence shows: Marcel Digital published an AI search case study for a global logistics provider covering January to September 2026: AI Overview rankings up 137% year over year, AI-generated sessions up 33%, and third place in AI visibility among tracked logistics competitors across ChatGPT, Google AI Mode, and AI Overviews. The program started from the prompts buyers ask AI engines in each priority market and used its Predictive Content Model to plan content. A second logistics case study, combining SEO and paid search, reports SQLs up 144% in Q4 against Q3 and cost per SQL down 22%. On Clutch, it lists a $5,000+ minimum engagement, a $200 to $300 rate, 10 to 49 employees, a 2003 founding in Chicago, web development as 40% of its work, and a 4.8 rating from 20 reviews.

My take: planning content from the prompts buyers ask in each market, then tracking a named competitor set, is how I would measure AI search for a B2B company.

The catch: the logistics case reports organic revenue as “millions” without a figure, pricing is not public, and B2B is one of several industries on its Clutch profile, alongside medical and education.

Score: 66/100.

B2B SEO agencies I considered and cut

Eight agencies that appear on other B2B lists, or that I checked as candidates, fell short of my evidence bar for the reasons below.

  • Straight North: its Clutch profile shows 142 reviews and SEO as 70% of its work, but its site would not load in any of my checks in November 2026, so I could not verify its case studies or pricing. I will re-score it when I can.
  • Altitude Marketing: its case studies center on account-based marketing and paid media, and SEO is 11% of its Clutch service mix.
  • Kula Partners: a manufacturing specialist, with SEO at 10% of its Clutch service mix and no verified reviews.
  • Walker Sands: its case studies lead with PR, the one SEO case study is a software company, and its newest Clutch review dates from 2020.
  • Obility: paid media leads its Clutch service mix, with SEO at 20%.
  • Hinge: a professional services branding firm, with SEO at 10% of its Clutch service mix and two reviews.
  • Ironpaper: no verified reviews on Clutch.
  • Bop Design: its Clutch profile lists web design as 100% of its work.

How to choose a B2B SEO agency

The best B2B SEO agency for you is the one whose case studies come from a business that sells the way you sell. Match the buying process first, then compare scores.

  • Midsized manufacturer: Gorilla 76, or OuterBox if you also sell online.
  • Industrial or financial firm already on HubSpot: Weidert Group.
  • Professional or business services firm: RevenueZen, or Sure Oak in financial services and insurance.
  • B2B tech or fintech company: Stratabeat.
  • Logistics or supply chain company: Marcel Digital.
  • Lean marketing team that needs work shipped: an agency with developers on staff (Gorilla 76, OuterBox, Weidert Group, Marcel Digital) or one that produces content in every tier (RevenueZen).
  • You want SEO, paid media, and creative from one B2B SEO marketing agency: Weidert Group and Gorilla 76 run full programs, and Marcel Digital and OuterBox run SEO and paid search together.
  • Software company: start with my SaaS SEO agencies list.

Green flags

The green flag I trust most is reporting tied to pipeline. On a cybersecurity account I run, organic clicks fell 32% in one quarter while organic opportunities rose from 37 to 43. A traffic report would have called that quarter a failure, and the opportunity count showed it was a good one. That split is the Great Decoupling, and an agency that reports in leads and pipeline sees it coming.

  • Case studies from a company that sells the way you do, with dates and a business number.
  • Leads tracked from the first search to a closed deal in your CRM.
  • A paid diagnosis or road map before the retainer.
  • Published pricing or terms, and an exit you can use.
  • B2B SEO experts who can name how your buyers search before the first call ends.

Red flags

  • Guaranteed rankings or guaranteed placement in AI answers.
  • A software playbook (free-trial pages, demo-request funnels, tool comparisons) pitched to a company that sells through RFQs or referrals.
  • Results reported as traffic with no leads or pipeline attached.
  • A 12-month contract signed before anyone has audited the site.

Questions to ask before you sign

  1. Show me a dated case study from a company that sells the way we do, with leads or pipeline.
  2. How do you track a lead from the first search to a closed deal in our CRM?
  3. How many accounts does my strategist carry?
  4. Who ships website changes: your developers or ours?
  5. How do you measure AI visibility: which prompts, which engines, and named or cited?
  6. What are the contract terms, and can we stop after the diagnosis?

What a B2B SEO agency costs

B2B SEO services from the agencies on this list run from $3,000 a month to more than $22,000 a month. The published signals:

  • RevenueZen: six tiers from $3,000 to $15,000 a month.
  • Stratabeat: from $8,000 a month, $15,000 to $21,000, and from $22,000, with a 30-day exit after six months.
  • Weidert Group: marketing and sales programs at $15,000 to $30,000 a month, with no contracts.
  • Gorilla 76: a $12,000 road map with no further commitment, and full programs of $200,000 to $250,000 a year including media.
  • Minimum engagements on Clutch (the total for a whole engagement): $1,000+ (OuterBox), $5,000+ (RevenueZen, Sure Oak, Stratabeat, Marcel Digital), and $10,000+ (Gorilla 76, Weidert Group).

At a $5,000 monthly budget, the published Clutch rates buy about 17 to 33 hours a month. A higher rate buys fewer hours, so ask how many of them go to a senior strategist. My full breakdown of pricing models is in how much does SEO cost.

When an agency is the wrong answer

A B2B SEO agency is the right tool when you need strategy, content, and site work at the same time. Two situations call for something smaller.

  • A small B2B firm with a handful of service lines: a fixed-scope SEO and GEO audit gives you the prioritized list, and your team can work through it.
  • A team with writers and developers that needs direction: you need senior judgment more than production. That is the work I do as a B2B SEO consultant, and results from my accounts are on my work page.

For lists scored on the same method, see my best technical SEO agencies and best AI SEO agencies.

Frequently asked questions

What does a B2B SEO agency do?

A B2B SEO agency grows qualified leads and pipeline from organic search for companies that sell to other businesses. A B2B SEO company does that by building the pages buyers use to compare vendors, fixing technical issues, earning links and mentions, measuring AI visibility, and tracking leads into the CRM.

How much does a B2B SEO agency cost?

A B2B SEO agency costs from $3,000 a month to more than $22,000 a month among the agencies I scored. RevenueZen publishes tiers from $3,000 to $15,000, Stratabeat starts at $8,000, and Weidert Group’s full programs run $15,000 to $30,000.

How is B2B SEO different from B2C SEO?

B2B SEO is different because a buying committee researches for months before anyone fills out a form, so the work targets fewer, higher-value searches and is measured in pipeline. B2C SEO usually chases more volume and measures revenue per visit. My guide to B2B marketing attribution covers how to measure the longer path.

How long does B2B SEO take to produce leads?

B2B SEO usually takes three to six months to produce qualified leads, and closed revenue takes longer because the sales cycle adds months on top. On this list, Stratabeat reports SQO growth within three months for a financial services company, and RevenueZen reports $2.2M in pipeline within six months for Pritchard Industries. The full timeline is in how long does SEO take to work.

Should a manufacturer hire a SaaS SEO agency?

A manufacturer should hire an agency with manufacturing case studies, because a SaaS playbook is built around free trials, demos, and software comparison pages. Onely found that 7 of 105 entries across published B2B agency lists were described by manufacturing or industrial clients, so a manufacturer has to look past the usual lists. Gorilla 76, OuterBox, and Weidert Group each report manufacturing as a leading industry.

Should you hire a B2B SEO agency or a B2B SEO consultant?

You should hire a B2B SEO agency when you need a team producing content and shipping fixes at volume, and a B2B SEO consultant when your own writers and developers can execute and need senior direction. My comparison of in-house SEO vs agency vs freelancer walks through the tradeoffs.

Most B2B SEO agencies on this list handle AI search, and they measure it in very different ways. Gorilla 76 tests buyer prompts across four AI engines and records whether a brand is named, cited, or absent, Stratabeat tracks ChatGPT visibility on non-branded prompts, and Marcel Digital tracks a competitor set across ChatGPT and Google’s AI features. Ask any agency for its method, using the checklist in how to measure AI visibility.