10 SEO Content Marketing Agencies for B2B SaaS (2026)

This article is part of a series on choosing the right agency. For a broader look at content marketing partners, check out The Top SaaS Content Marketing Agencies. For thought leadership, read How to Choose a Thought Leadership Agency. This article was last updated: August 24, 2026.

TL;DR

The best SEO content marketing agency for you depends on whether you need content to rank, to convert, or to get cited by AI assistants (realistically, you want an agency that can do all three!). Here's our top picks:

Typical cost: most B2B content retainers land between $5,000 and $30,000 per month depending on volume, research depth, and whether strategy is included. Almost every agency on this list quotes custom.

What changed in 2026: AI Overviews cut clicks on the queries these agencies target, and the category split into SEO-first and GEO-first shops. The question to ask an agency is no longer "can you rank us" but "can you get us cited."

We're Campfire Labs, a B2B content agency that specializes in editorial SEO content. Yes, we're on this list, but so are nine other agencies to choose from. Some agencies listed here excel at high-volume programmatic content. Others focus on conversion optimization, distribution, or the newer discipline of getting brands quoted inside AI answers. We've tried to be specific about what each agency does well and where they're not the right fit, so you can make a smart decision.

Note: Pricing is approximate and based on publicly available information. Most agencies provide custom quotes based on scope.

What's changed since we first published this list

We wrote the original version of this article in January 2026. SEO content is on such a rollercoaster that a lot has changed since then.

Ranking first is worth less than it used to be. Pew Research Center tracked the actual browsing behavior of 900 U.S. adults and found that when an AI summary appeared in Google results, users clicked a traditional search result on 8% of visits, compared with 15% of visits when no summary appeared. Only 1% of visits included a click on a link inside the summary itself. Ahrefs, analyzing 300,000 keywords, put the position-one CTR decline on AI Overview keywords at roughly 34.5%. The practical implication for anyone hiring an agency: a proposal that promises "position one for 40 keywords" is quoting you a number that means less than it did eighteen months ago.

The category has split, and agencies have picked sides. Siege Media—one of the largest agencies on this list—now leads with "Full-service GEO. We make brands the answer in search," describing itself as "the GEO agency built for the new search." Grow and Convert has renamed its core offer an "SEO and GEO-focused content marketing service." Ten Speed now sells answer engine optimization as a named service line. In our opinion, this is way beyond cosmetic rebranding; agencies that repositioned have restructured what they deliver: citation tracking, entity coverage, and content formatted for extraction rather than for dwell time.

Buying criteria moved from volume to citability. The old evaluation question was how many pieces per month at what quality. The new one is whether an agency can show you where your brand currently gets mentioned in AI answers, which competitors get cited instead, and what they would change to close that gap. Most agencies still cannot answer that with data. The ones that can are worth paying more for.

The best SEO content agencies, listed

1. Campfire Labs

Best for: Editorial-quality SEO content that aligns with brand positioning and supports complex B2B sales. Companies that need content to influence buying committees, not just generate pageviews.

Not ideal for: Programmatic SEO, technical SEO, or high-volume content production. If you need 50 blog posts a month, we're not built for that, and we wouldn't pretend otherwise.

What makes us different: We approach SEO content through the lens of editorial quality and brand storytelling. Our work often incorporates original research, expert interviews, and narrative structure designed to resonate with sophisticated B2B buyers. We focus on content that ranks and positions your company as a thought leader in your category.

On AI search: We structure content so it can be extracted and cited—clear claims, specific data, and original research that AI assistants have a reason to quote. Original research matters more here than anywhere else: a model has no reason to cite your restatement of a common fact, but it has every reason to cite a number only you have.

Click here for our list of top SaaS content agencies that do work beyond thought leadership.

Book a call with our CEO to discuss your organic acquisition goals and see how Campfire Labs can develop and execute a content strategy for your business.

2. Siege Media

Best for: Data-driven content strategies with strong link building and visual content. Companies that want a full-service partner handling everything from ideation to design to promotion.

Not ideal for: Companies looking for thought leadership content or deep industry-specific expertise. Siege excels at scalable content, but their strength is more in systems than in specialized B2B storytelling.

What makes them different: Siege Media has been in the game since 2012 and reports generating over $148 million in yearly client traffic value. They use proprietary tools and frameworks (like their Keyword Opposition to Benefit analysis) to identify content opportunities. Their team includes writers, editors, designers, and SEO specialists—making them a true end-to-end partner. Notable clients include Zapier, Zoom, and Figma.

On AI search: Siege has repositioned hardest of anyone on this list, now leading with "full-service GEO" and framing their work as making brands "the answer in search." If AI visibility is your primary concern and you want a large team behind it, they're the most obvious fit here.

3. Animalz

Best for: Long-form, educational content that establishes thought leadership. B2B SaaS and tech companies that need to explain complex concepts to professional audiences.

Not ideal for: Companies that need technical SEO work, link-building services, or high-volume content production. Animalz focuses on quality writing, not comprehensive SEO services.

What makes them different: Animalz content tends to be long-form, substantive, and designed to turn readers into informed decision-makers. They've worked with companies like Amazon, Google, Airtable, and GoDaddy. Their own blog is widely respected in the content marketing industry for strategic insights.

4. Grow and Convert

Best for: Conversion-focused content that targets high-intent keywords. Companies that want content connected directly to leads and sign-ups, not just traffic.

Not ideal for: Brand building or top-of-funnel awareness content. Their methodology prioritizes bottom-funnel keywords first, which works well for lead generation but less so for category education.

What makes them different: Grow and Convert developed the "Pain Point SEO" methodology, which focuses on targeting keywords that indicate high purchase intent. They work backwards from conversion goals, prioritizing content that captures ready-to-buy traffic before expanding to broader topics. They also offer link building and technical SEO support. Clients have included Aura, Patreon, and Scribe.

On AI search: They now describe their core offering as an SEO and GEO-focused content marketing service. Their bottom-funnel bias translates reasonably well to AI search, where comparison and alternatives queries are exactly the kind of prompt buyers bring to an assistant.

5. Foundation Marketing

Best for: Content distribution and amplification. Companies that have invested in content but struggle to get it in front of the right audiences.

Not ideal for: Companies that need deep technical SEO expertise or want an agency focused purely on organic search. Foundation's strength is in distribution strategy, not technical optimization.

What makes them different: Foundation takes an end-to-end approach that extends well beyond publishing. They excel at amplifying content through LinkedIn, newsletters, influencer partnerships, and community engagement. CEO Ross Simmonds is a recognized thought leader in content distribution. They also focus on content refreshes and repurposing—getting more value from existing assets. Clients have included Mailchimp, Canva, and Webex.

6. Omniscient Digital

Best for: SaaS companies that need strategic guidance alongside content execution. Teams that want content tied to pipeline and revenue, not just traffic metrics.

Not ideal for: Companies that just need content production without strategic involvement. Omniscient Digital positions itself as a strategic partner, not a content factory.

What makes them different: Founded by former HubSpot content team members, Omniscient Digital uses a proprietary research framework that blends qualitative insights (customer interviews, persona analysis) with quantitative data to craft custom strategies. They focus on building scalable content systems and connecting content to business outcomes. Their approach is consultative—you're working with senior strategists, not just account managers.

7. Optimist

Best for: Mid-market SaaS companies looking for a structured, strategic approach to content. Product-led growth companies that want content aligned with user acquisition goals.

Not ideal for: Enterprise companies with complex stakeholder needs or those looking for pure thought leadership content. Optimist's sweet spot is growth-stage SaaS.

What makes them different: Optimist describes themselves as builders of "organic growth engines." They start with strategy before writing anything, tightly interlocking SEO research, content planning, design, and internal linking structure. They also include design and outreach in their engagements, ensuring content both ranks and earns backlinks. Clients have included Semrush and Submittable.

On AI search: Optimist now publishes its own analysis of the GEO agency landscape, which is a reasonable signal that they're tracking the shift rather than treating it as a passing trend.

8. Codeless

Best for: Companies that want to build a content operation they own rather than rent one indefinitely. Growth-stage teams that need the system, the workflows, and the hiring plan as much as the output.

Not ideal for: Companies looking for highly specialized thought leadership, or teams that want to hand content off entirely and never think about it again.

What makes them different: Codeless has repositioned meaningfully since we first published this list. They built their reputation on high-volume, long-form production—hundreds of SEO articles a month across competitive niches, for clients including Reddit, Remote.com, and Motion. Today they lead with content operations and owned channels, framed around transferring ownership to the client rather than creating dependency: "stop renting your growth, start owning it." They're also publicly skeptical of AI-generated content at scale, publishing critiques of "AI slop" while much of the category leans into automation. If you're weighing whether to build or buy, they're an unusual agency to talk to, because their model assumes you eventually build.

9. Growth Plays

Best for: B2B tech companies that want content tied directly to pipeline and revenue. Companies frustrated by traffic that doesn't convert.

Not ideal for: Companies focused primarily on brand awareness or top-of-funnel education. Growth Plays is laser-focused on pipeline generation.

What makes them different: Growth Plays integrates analytics and attribution into everything they do. They help clients see exactly which content pieces influence revenue, not just which drive traffic. Their engagements are time-boxed rather than open-ended—a nine-week content strategy and SEO planning build is their standard entry point, designed to hand you a plan tied to your GTM motion. They also assist with website migrations to ensure SEO continuity. Clients have included Lattice, Mode Analytics, Calendly, and Merge.

10. Ten Speed

Best for: Companies with existing content that's underperforming. B2B SaaS teams that want content optimized for their specific ICP, not generic keyword targeting.

Not ideal for: Companies starting from scratch who need to build a content foundation. Ten Speed's content refresh expertise is best utilized when you have existing assets to optimize.

What makes them different: Ten Speed stands out for their emphasis on content optimization and refreshes. They start with an unusually thorough onboarding process, going deep on your product, audience, and ICP to ensure content truly aligns with your buyers. This reduces the misalignment that often frustrates companies working with agencies. They combine new content creation with systematic updates to existing pieces—often unlocking quick wins from content you've already invested in.

On AI search: Ten Speed now frames its work as increasing search visibility "across Google and LLMs," with answer engine optimization and AEO-focused refreshes as named service lines. Given that refreshing existing pages is their core competency, they're a natural fit if your problem is a library that used to rank and no longer does.

The SEO content agency spectrum

"SEO content marketing agency" describes quite different types of companies. Understanding where each falls on the spectrum helps you evaluate fit.

Programmatic SEO sits at one end of the spectrum: high-volume, template-driven content designed to capture long-tail search traffic at scale. Editorial SEO sits at the other: fewer pieces, higher quality, designed to rank and build brand authority with sophisticated buyers. GEO, or generative engine optimization, is the newer third pole—content and entity work designed to get your brand named inside AI-generated answers, where there may be no click at all.

None of these is inherently "better", despite the hype around GEO. What matters is alignment with your goals.

If you're selling a low-ACV product with a short sales cycle, programmatic content that captures high-volume searches might be exactly what you need. But if you're selling to buying committees, navigating 6-12 month deal cycles, and competing on thought leadership, you need content that does more than rank; it needs to influence how prospects think about your category. And if your buyers have started their research inside ChatGPT or Perplexity rather than Google—which, for technical B2B categories, many now have—being absent from those answers is a visibility problem no amount of keyword ranking solves.

Most companies need a blend. The mistake is hiring an agency that only knows how to do one and letting them define your whole strategy around it.

Book a call with our CEO to discuss your organic acquisition goals and see how Campfire Labs can develop and execute a content strategy for your business.

Questions to ask on discovery calls

Once you're clear on your needs, here's what to ask potential agencies:

"How do you approach keyword research?" Listen for whether they prioritize search volume alone or factor in intent, competition, and alignment with your buyer journey. The best agencies will talk about targeting keywords your buyers actually search for—not just keywords that are easy to rank for.

"Who writes the content?" Some agencies use generalist freelancers. Others have in-house writers with domain expertise. For complex B2B topics, writers who understand your industry will produce dramatically better content. Ask directly what role AI plays in their drafting process and who edits the output—most agencies now use it somewhere, and the honest ones will tell you where.

"How do you handle distribution?" Many agencies stop at publishing. The best ones have a plan for amplification—whether that's link building, social distribution, or helping you repurpose content across channels.

"How do you measure and report on results?" Look for agencies that go beyond traffic and rankings. Do they help you connect content to pipeline? Can they set up attribution? What does their reporting cadence look like?

"Can you show me where we currently get cited in AI answers?" This is the question that separates agencies that have adapted from agencies that have added a GEO page to their website. An agency doing this work seriously can show you which prompts surface your category, who gets named, and where you don't. An agency that answers with generalities about "optimizing for AI" hasn't built the capability yet.

Red flags to watch for

Guaranteed rankings or unrealistic timelines. SEO is competitive and uncertain. Any agency that guarantees specific rankings or promises dramatic results in 4-6 weeks is either inexperienced or overselling.

Guaranteed AI citations. The 2026 version of the same problem. Nobody controls what a model cites, and anyone promising you a fixed number of ChatGPT mentions is selling something they can't deliver.

One-size-fits-all packages. If an agency offers the same "10 blog posts per month" package to every prospect without understanding your specific situation, they're optimizing for their production efficiency, not your results.

Vague answers about process or team. You should know who's working on your account and how they approach the work. Evasiveness here often means heavy outsourcing or lack of defined processes.

Their own marketing is weak. Check the agency's blog. If they claim to be content experts but their own content is thin, outdated, or doesn't rank, that tells you something.

Frequently asked questions

What does an SEO content marketing agency actually do?

An SEO content marketing agency researches what your buyers search for, plans content around those topics, writes and edits it, and optimizes it to rank in search engines. Most also handle internal linking and on-page optimization. Some add link building, technical SEO, design, distribution, and—increasingly—generative engine optimization for AI assistants. The scope varies enormously between agencies, which is why two proposals for "SEO content" can describe completely different engagements.

How much does an SEO content marketing agency cost?

Most B2B content retainers fall between $5,000 and $30,000 per month. Production-focused agencies sit at the lower end, and strategy-led agencies doing original research and expert interviews sit at the higher end. Per-article pricing typically ranges from a few hundred dollars for commodity content to several thousand for researched, interview-based pieces. Almost every agency on this list quotes custom, so treat published ranges as a starting point rather than a rate card.

How long does SEO content take to work?

Plan on six to twelve months before organic content contributes meaningfully to pipeline. Bottom-of-funnel pages targeting low-competition, high-intent keywords can move in two to three months. Competitive head terms take longer, and a new domain with little authority takes longer still. Any agency promising meaningful results in four to six weeks is overselling.

What's the difference between an SEO agency and a content marketing agency?

An SEO agency typically leads with technical work: site audits, page speed, crawlability, site architecture, link acquisition. A content marketing agency leads with editorial: research, writing, editing, and brand voice. SEO content agencies—the ones on this list—sit in the middle, producing content designed to rank. If your site has technical problems, a content agency won't fix them, and no amount of good writing will overcome them.

What is GEO, and do I need a GEO agency?

GEO stands for generative engine optimization: getting your brand named and cited inside AI-generated answers from tools like ChatGPT, Perplexity, and Google's AI Overviews. You probably don't need a separate GEO agency. You need a content agency that has folded citation work into how it already operates—because the underlying inputs (clear claims, original data, structured content, entity consistency) overlap heavily with what good SEO content requires anyway.

Are AI Overviews really reducing content traffic?

Yes, on the queries where they appear. Pew Research Center found that users clicked a traditional search result on 8% of visits where an AI summary appeared, versus 15% where none did. Ahrefs, across 300,000 keywords, measured a roughly 34.5% drop in position-one CTR on AI Overview keywords. The effect is uneven: informational, top-of-funnel queries lose the most, while commercial and comparison queries—the ones closest to a purchase—still generate clicks.

Should I hire an agency or build an in-house content team?

Hire in-house if content is a permanent, core function and you can attract a strong lead and keep them busy. Hire an agency if you need senior strategy and specialized skills faster than you can recruit them, if your volume fluctuates, or if you need a category of work—original research, design, link building—that you won't staff for full time. Many B2B teams run both: one or two in-house people who own strategy and quality, with an agency providing capacity and specialist skills.

How do I know if my current content agency is underperforming?

Look for three signals. First, reporting that leads with traffic and rankings but never connects to pipeline. Second, content you'd be embarrassed to send to a prospect—a reliable sign that a generalist writer is working without real subject-matter input. Third, no point of view on AI search, which in 2026 means they haven't reassessed their approach in over a year. Any one of these is worth a conversation. All three is worth a search.

Making your decision

Choosing an SEO content marketing agency isn't about finding the "best" one; it's about finding the right fit for your specific situation. A startup optimizing for user acquisition has different needs than an enterprise company building thought leadership for a complex sales cycle.

Before you reach out to any agency, get clear on what success looks like for you. Is it traffic? Pipeline? Brand positioning? Getting named when a buyer asks ChatGPT who the vendors in your category are? The answer will help you evaluate which agency's strengths align with your priorities.

If editorial-quality SEO content is your priority—content that ranks AND builds brand authority, supports complex sales, and influences how prospects think about your category—we'd love to talk. If you need programmatic SEO, technical audits, or high-volume content production, one of the other agencies on this list is likely a better fit. Either way, you're now equipped to ask the right questions and make a smart choice.