12 Best B2B SEO Companies (2026): Who to Hire and What It Costs

WebFX is the default short-list pick because it removes the first obstacle in agency shopping: it publishes a price. Custom SEO plans start at $2,900 a month, and the page spells out what that covers — strategy, on-page, technical and off-page work, content, and ROI reporting through RevenueCloudFX, which connects SEO to leads and revenue. AI search tracking through OmniSEO covers ChatGPT, Perplexity and Google AI Overviews.

The trade-off is fit. WebFX is a generalist with 750-plus experts in more than 200 industries, so a niche B2B category will not get a team that lives in it. Some G2 reviewers report frequent rotation of the people on their account. If you want one vendor for SEO, PPC and CRO with published pricing and a 4.8 on G2, start here; for a B2B-only team, look at Straight North or Directive.

Straight North has sold B2B lead generation since 1997, and the focus shows in how it reports: the point is qualified sales leads, not traffic. Its team screens leads so you can see which inquiries are real sales opportunities, and its SEO, PPC and web work is aimed at manufacturers, distributors and industrial firms with long, committee-driven sales cycles. The work is done by an in-house US team, and the site offers a free custom SEO audit before you commit.

The honest gap is price transparency: nothing is published, so you cannot budget without a proposal. The lead-gen focus also suits B2B better than ecommerce, and the team is smaller than the full-service giants here. For a mid-size industrial or manufacturing company that wants SEO measured in pipeline, Straight North is the most focused pick in this list.

Directive is built for one buyer: a B2B SaaS or enterprise tech company that needs organic search to produce pipeline. Its Customer Generation methodology treats rankings and traffic as inputs, not outcomes, and reports on the revenue SEO produces. SEO runs alongside paid search, CRO and revenue operations under one attribution model, and the client list includes Adobe, Calendly, Amazon and Samsung.

That focus is also the limit. The model is built around SaaS buying cycles — fewer, higher-intent searches and long sales processes — so it is a poor fit for ecommerce, local or consumer businesses. Nothing is published on price, and the scope is enterprise-grade. If you sell software to businesses and need SEO tied to closed revenue, Directive is the strongest specialist here.

Siege Media is the content-led pick, and it is the only agency here besides WebFX that publishes a number: content marketing minimums are $8,000 a month on a 12-month contract, with a 30-day out clause. That buys a dedicated pod building linkable assets — original research, interactive tools, data-led guides — plus digital PR to earn links, not a set number of blog posts. Its GEO practice adds AI search visibility with proprietary tools DataFlywheel and BlueprintIQ.

The price is the filter: $8,000 a month is the second-highest entry here, and annual contracts are the norm. Siege also runs no paid channels, so PPC or email needs a second vendor. For SaaS, fintech and ecommerce brands whose growth model depends on content that ranks and earns links at the same time, it is the best pure content engine here.

Victorious does one thing — search — and that focus earned it five SEO Agency of the Year awards. Its integrated SEO and AEO system pairs technical SEO, content and link building with live dashboards that track Organic Traffic Value and AI citations next to rankings, so you can see what search is worth rather than just where you rank. G2 reviewers praise the clear reporting, checklists and responsive account managers.

Its own site is unusually direct: budget at least $6,000 a month and commit to a 12-month campaign. The directories disagree: G2 lists an Entry tier from $4,999 a month while Clutch lists $5,999 a month, with a $50,000-plus minimum project size. Get a written quote before budgeting. For a mid-market or enterprise B2B team that wants a search-only specialist with transparent reporting, Victorious is the disciplined choice.

Thrive is the flexible pick in this list: month-to-month contracts with no long-term lock-in, which is rare among agencies of its size. The agency has 160-plus specialists and more than 20 years in business, is a Google Premier Partner, and covers SEO, PPC, web design, content and CRO under one roof. It also offers white-label digital marketing services, which makes it a practical partner for agencies that resell SEO.

The gap is price clarity. Thrive publishes no B2B SEO price — its site quotes local SEO packages from $500, which says nothing about a B2B retainer — so budgeting still needs a sales call. Full-service breadth also means SEO shares attention with other channels. If contract flexibility matters more than a published rate card, Thrive is the easiest agency here to try.

Single Grain is the AI-search-first pick. Its AI SEO service optimizes for Google, AI Overviews, Perplexity, YouTube and voice, plus ChatGPT, Gemini, Claude and Copilot, with structured data, entity optimization and content built so AI systems can parse, cite and recommend your brand. Technical SEO, link building and revenue-first reporting sit in the same program, so visibility work connects to leads rather than ending at rankings.

The trade-off is breadth: Single Grain is a growth agency, and SEO is one practice among paid media, social and ecommerce, so it is not a search-only shop. Pricing is bespoke, which makes budgeting slow. For a B2B brand that wants to show up in AI answers as well as Google — and wants one team running both — Single Grain is the most AI-forward option here.

Intero Digital has the longest track record in this list: its roots go back to 1996, before SEO was a job title. Today it pairs national, ecommerce and local SEO with paid media and digital PR, and pitches AI search hard through its patented Intero Insight Engine and Generative Response Optimization framework, which targets Google AI Overviews, ChatGPT and Perplexity. Every engagement starts with competitor analysis and a customized roadmap.

The honest caveats are price and identity. Nothing is published on pricing, so every engagement is custom-scoped, and the agency rebranded from SocialSEO, so older reviews sit under a different name. The scope also leans enterprise. For a mid-size to enterprise brand that wants a veteran agency covering national SEO and GEO together, Intero is the safe, established pick.

OuterBox is the catalog pick. It runs a dedicated B2B SEO practice for manufacturers, distributors and SaaS companies, and it is the only agency here with deep B2B ecommerce expertise — including Unilog (CIMM2) platform work for distributors with large, spec-driven catalogs. The program covers technical SEO, keyword and intent mapping, content, link building, CRO and analytics tied to revenue, plus AI search optimization, from an in-house US team with 20-plus years behind it.

Pricing is custom only — OuterBox offers a free SEO quote within 24 hours, but no published rate — and the B2B-plus-ecommerce focus means pure lead-gen B2B shares the playbook with catalog work. For a distributor or manufacturer whose catalog is the website, OuterBox understands the RFQ path and product-content problems better than any generalist here.

First Page Sage is the thought-leadership pick. Every engagement starts with a planning month — SEO, GEO and conversion audits, with technical SEO completed in the same sprint — and then produces six to seven pieces a month written in-house by W2 employees, briefed weekly by interviews with your own engineers and subject-matter experts. The content is built to rank on Google and earn recommendations in ChatGPT, Claude and Google AI Overviews.

The model is rigid by design: volume is fixed at six or seven pieces a month, and retainers run $6,000 to $12,000 a month per the agency's own pricing report. The premium positioning suits larger B2B budgets. For a SaaS or AI company whose buyers are skeptical technical decision-makers, though, this is the agency most likely to produce content those buyers actually respect.

Ironpaper is the demand-gen pick. It is B2B-only since 2003, and it wires SEO into a single system with content strategy, account-based marketing, paid campaigns and marketing automation, so search work is measured against pipeline rather than traffic. The agency brings deep HubSpot experience — including lead-generation forms, landing pages and automation — and focuses on technology, SaaS, manufacturing and telecom companies with established sales teams.

The limits are scope and shape. Ironpaper runs inbound-only programs — there is no outbound SDR work — and engagements are retainer-based, so one-off projects are not the model. Nothing is published on pricing. For a B2B company that needs SEO inside a demand-generation engine rather than as a standalone service, Ironpaper is the most integrated option here.

Brafton is the volume pick: North America's largest content marketing agency, producing SEO blogs, white papers, ebooks, website copy, video and design at a scale no boutique can match. Each account gets a dedicated writer and strategist, and a client platform shows every brief and draft as it moves through approval. Technical SEO, link building and a custom GEO service sit alongside the content, and Brafton is a HubSpot Platinum Solutions Partner.

The catch is that everything is custom-quoted — Brafton's own service pages say so — so there is no rate card. A high-volume model can also make strategy feel secondary to output, and the global team spans US, UK, Australian and German time zones. For a mid-size or enterprise team that needs a lot of SEO content in many formats, Brafton is the biggest engine here.