Top 8 GEO agencies for B2B (2026 Guide).

The best GEO agencies for B2B in 2026 are the ones that treat generative engine optimization as a discipline with its own research, not a slide added to an existing SEO deck. Some are AEO specialists who renamed the practice; others are content or growth agencies that built a GEO service line on top of what they already run. Below are eight worth shortlisting, ranked on how they define the work, who they serve, and whether they publish a price before the first call.

We publish this list and SourceRank AI is our own service; the other seven are ranked on the criteria below, verified against each provider's own site on the day this was written.

Quick comparison

How we chose

Every provider had to clear three bars: it names generative engine optimization or GEO as an actual service line (not a relabelled SEO retainer), it works with B2B companies as a stated focus, and it is verifiable on its own site as of this run. It is also not a current SourceRank AI client or partner. Within that set, we weighed:

1. 1. Whether GEO is a named, described service, with its own methodology, rather than a single paragraph on an SEO page.
2. 2. Pricing transparency, because a published number lets a buyer qualify itself before a sales call.
3. 3. B2B specificity, checked against each firm's own client roster and case studies.
4. 4. Research or measurement behind the work, since content that is not informed by what actually gets cited is a guess dressed up as a strategy.

What is GEO, and how is it different from AEO?

Generative engine optimization (GEO) and answer engine optimization (AEO) describe the same underlying practice: getting a brand named and cited inside AI-generated answers rather than only ranking in the ten blue links. GEO leans on the academic framing from the term's 2023 origin (structuring content so generative models select and cite it); AEO leans on the answer-first framing SourceRank AI and most specialist shops use. In practice, check the actual service description on each provider's site rather than the label, because the work under both names is largely the same: entity clarity, structured data, citation-worthy content and the off-site presence engines actually quote.

The 8 best GEO agencies for B2B

1. SourceRank AI

Best for: a B2B company that wants GEO and AEO done for them, with measurement built in rather than sold separately.

SourceRank AI is a done-for-you Answer Engine Optimization service, not software you self-serve. It measures how often ChatGPT, Gemini, Microsoft Copilot and Google's AI answers name a company today, finds why competitors get named instead, and does the on-site structure, schema and off-site citation work to close the gap. The AI Visibility Audit is a $497 one-time engagement; ongoing work runs from $997 a month at the Foundation tier. See how it works or book a call to see where you stand first.

2. Siege Media

Best for: an enterprise or mid-market brand that wants original research and digital PR to be the engine behind its AI citations.

Siege Media is a full-service marketing agency headquartered in Austin, with offices in New York, Chicago and San Francisco, running GEO through consulting, content strategy, content marketing, digital PR and Reddit marketing. Its client roster spans SaaS, fintech, ecommerce, healthcare and cybersecurity brands including Adidas, Airbnb and Zendesk. Pricing is not published; prospects are directed to an assessment call.

3. Grizzle

Best for: a B2B SaaS company that wants GEO, SEO and content production run by one team.

Grizzle is a London-based B2B organic growth agency serving SaaS clients such as Pipedrive, Semrush, Tide and Tipalti, offering GEO and SEO strategy alongside content production, digital PR and video. It runs both ongoing retainers and shorter campaign sprints. Pricing is not published on its site.

4. Obility

Best for: a hyper-growth B2B tech company that wants GEO added inside a broader paid and organic demand-generation stack.

Obility is a Portland, Oregon agency specialising in nine B2B sectors, including SaaS, DevOps, AI and machine learning, cybersecurity and healthtech, serving clients such as Snowflake, Fastly and Autodesk. Generative Engine Optimization sits alongside paid search, paid social, SEO and Reddit management rather than standing alone. Pricing is not published.

5. RevenueZen

Best for: a B2B brand that wants GEO paired with expert-interview content and LinkedIn distribution.

RevenueZen is a Portland, Oregon agency framing its offer as "SEO that creates pipeline, GEO that positions your brand as the trusted answer," working across startups, healthcare, professional services and financial services. It reports managing more than 300 client partnerships. Pricing is not published; a custom quote follows an intro call.

6. Graphite

Best for: a growth-stage or enterprise team that wants a research team choosing the highest-impact GEO and SEO bets rather than running every tactic at once.

Graphite is a San Francisco-headquartered, distributed-team agency built around what it calls an AI research function that identifies the small share of strategies driving most of the impact, across AEO, SEO and performance marketing. Case studies include Webflow, n8n and BetterUp. Pricing is not published.

7. Animalz

Best for: a B2B SaaS company that wants GEO built into a high-craft content programme rather than bought as a standalone service.

Animalz is a fully remote content marketing and SEO agency, registered in New York, serving B2B SaaS clients including Airtable, Amplitude and Atlassian. Its GEO work sits under an Answer Engine Optimization offering alongside survey-driven whitepapers and LinkedIn thought leadership. Pricing is not published.

8. Optimist

Best for: a B2B SaaS company that wants a published price before the first call and one framework covering SEO, AEO and GEO together.

Optimist is a Denver, Colorado agency serving B2B SaaS and software companies from startup to public company, including Semrush and Superhuman, through what it calls its CORE Framework. It is one of the few names on this list with public numbers: a one-time roadmap at $7,500, an advisory retainer starting at $3,000 a month, and a full-service retainer starting at $4,000 a month.

How to choose between them

1. 1. Check whether GEO is a named service with a described method, not one paragraph bolted onto an SEO page.
2. 2. Ask which engines get tracked. SourceRank AI measures ChatGPT, Gemini, Microsoft Copilot, Google AI Mode and Google AI Overviews; confirm the same specificity from any provider before comparing numbers.
3. 3. Weigh published pricing against custom quotes. A firm that names its floor, like Optimist or SourceRank AI, lets you qualify itself before a sales cycle.
4. 4. Decide whether you need GEO alone or GEO inside a wider content or demand-gen programme. Agencies like Obility and RevenueZen fold it into a bigger stack; specialists treat it as the whole job.
5. 5. Read how to choose an AEO agency before the first call, and compare against the wider best AEO agencies list if your buyer is industry-specific rather than a general B2B search.

Frequently asked questions