The best demand generation agencies for Series B companies in 2026

What they doDiscovered Labs is a specialist, not a full-service agency. It does one thing: win organic search and AI answers at the same time, what it calls SEO and answer engine optimization run as one engine. That focus fits a Series B company that already has traffic but needs to show up when buyers ask ChatGPT, Gemini, or Google's AI overviews for a shortlist. The team is led by a former Stanford AI researcher, and it publishes original studies of millions of AI citations that HubSpot and Semrush have cited. Named clients include Instantly, incident.io, Granola, and Gladia, the kind of hypergrowth SaaS names a scaling team recognises. It reports on pipeline, not rankings. If you need brand, paid, and events under one roof, this is not that.

Best forGrowth-stage SaaS teams that want to win Google and AI answers at once and already have traffic to build on.

What they doWalker Sands is a large, established agency, founded in Chicago in 2001 with more than 200 staff. It runs brand, demand, PR, digital, and RevOps as one connected model it calls outcome-based marketing, and in 2026 it acquired RevPartners to add CRM and HubSpot engineering. For a Series B company scaling toward mid-market, that breadth means strategy through to pipeline under one roof, rather than stitching five point vendors together. Its client list includes Semrush, Paylocity, commercetools, AspenTech, and John Deere, and it publishes its own research, like a B2B AI Search Visibility Benchmark, so it runs the play it sells. It holds a 4.8 rating from 32 reviews on G2. The trade-off is size: it does not post prices, and a large integrated agency is usually a bigger commitment than a lean scaleup wants.

Best forSeries B companies scaling toward mid-market that want strategy, demand, PR, and RevOps from one experienced partner.

What they do42 Agency, based in Toronto since 2018, sells demand generation and marketing operations as one system rather than as two vendors. For a Series B team that has bought HubSpot or Pardot and now needs pipeline out of it, that combined model is the draw. What sets it apart is data: it publishes its own B2B benchmarks for paid media, email, and LinkedIn, drawn from 87 client accounts and more than 5 million dollars in managed ad spend, then runs campaigns off that evidence. Its research hub ranks for terms like B2B benchmarks and email marketing benchmarks, so it clearly runs the play it sells. The gaps are transparency ones: it does not name its senior team on the site, and it does not publish pricing.

Best forSeries B SaaS teams that need demand generation and HubSpot or Pardot operations fixed as one system.

What they doGripped is a London retainer agency that works only with B2B SaaS and AI companies, covering SEO, demand generation, and answer engine optimization together. It is one of the clearest examples on this list of an agency that runs its own play: it ranks organically for competitive terms like London marketing agencies and a cluster of UK SEO queries, off purpose-built service pages rather than its homepage. For a Series B SaaS company that wants pipeline from search and AI answers instead of more ad spend, that track record matters. It names its senior team and, unusually, publishes pricing: retainers start at 5,000 pounds a month, with most clients between 8,000 and 12,000 pounds. The main limit is focus. It is UK-centred and built for SaaS, so a US-heavy or non-software team should check fit.

Best forB2B SaaS scaleups that want pipeline from organic search and AI answers, with pricing shown up front.

What they doMatter Made, out of Denver since 2016, focuses on efficient demand for B2B SaaS companies scaling toward 100 million dollars in ARR. Its pitch to a Series B team is not more leads but more efficient ones: it prices paid media on performance and reports on pipeline and customer acquisition cost rather than impressions, and it pairs delivery with a sister design studio for the creative. Its own blog ranks for growth and demand topics like speed to lead and creating demand, so there is genuine content behind the positioning. The clients it names are fast-growing technology companies. Two things to weigh: it does not publish pricing, and it does not name its senior team on the site, so you will want both pinned down before you sign.

Best forB2B SaaS companies scaling toward $100M ARR that want more efficient demand, not more volume.

What they doScaled is a UK consultancy, started in 2022 and run by founders who have built and sold B2B businesses themselves. It pairs go-to-market and demand generation delivery with exit, investment, and non-executive advisory, and tracks progress through its own ScaledOS platform. That mix fits a Series B leadership team thinking about the next raise or an eventual exit, not just this quarter's leads. It is a textbook example of practising what it sells: in the UK it ranks number one for demand gen agency, and on page one for related demand generation terms, on purpose-built pages. Consulting is priced openly from 2,000 pounds a month, and the senior team is named. The caution is scale and geography: it is a small team of under ten and UK-centred, so a large US programme may stretch it.

Best forSeries B founders and leaders building toward a raise or exit who need pipeline and operating structure at once.

What they doRevvGrowth is a B2B SaaS marketing agency that runs SEO, paid, ABM, and content toward qualified pipeline rather than raw lead volume. Its strongest signal is its own search footprint: it ranks for the categories it sells, on structured service hubs for SaaS SEO, AEO tracking, and ABM, not just generic blog posts. For a Series B SaaS company that wants organic and AI-answer visibility as it scales, that is real evidence the play works. It names its team and documents its method. Two caveats for a buyer: it is a younger firm, founded in 2023, and it does not publish pricing, so scope and cost need confirming on a call. Its delivery team is India-based, which suits some buyers and not others.

Best forSeries B SaaS teams that want organic and AI-answer visibility, run toward qualified pipeline.

What they doSponge is a fractional marketing operations agency, not a demand-creation shop, and that is exactly why it belongs on a Series B list. Fast growth tends to leave the marketing stack in a mess: broken lead routing, scoring that no longer works, reporting nobody trusts. Sponge steps in as an embedded ops team, with certified operators across Marketo, HubSpot, Salesforce, and Pardot, to restructure account hierarchies, rebuild lead lifecycles, and clear technical debt so the pipeline you generate actually gets counted. It has run this since 2016 and publishes genuinely useful ops content, one of the stronger own-marketing footprints in its group. What it is not is a source of new demand: it fixes and runs the plumbing, so you still need someone to create the pipeline. It does not publish pricing.

Best forSeries B teams whose martech stack, routing, and reporting have buckled under fast growth.

What they doPosition2 is a 20-year-old, 200-plus-person growth marketing agency in Santa Clara that offers the full stack: paid media, SEO, ABM, automation, CRO, and creative, backed by its own products, the Arena Calibrate analytics platform and a StudioX 3D content studio. For a Series B company scaling fast and wanting one partner to handle performance across channels, that breadth and its enterprise client list, which names AWS, Lenovo, Google Cloud, American Express, and Cohere, are the draw. It publishes credible GTM and RevOps thought leadership too. The honest weakness is its own organic footprint: for a two-decade agency, it ranks mostly on branded terms, and the real engine is paid media and enterprise relationships. It does not publish pricing, and its enterprise orientation can be heavy for a lean team.

Best forSeries B companies scaling paid and performance across many channels that want one established partner.

What they doCS2 delivers go-to-market and revenue operations for growth-stage B2B tech, which is squarely the Series B moment: the point where marketing, sales, and RevOps have to line up or pipeline leaks between them. It is more than an execution vendor, with named senior operators, a documented approach, and a strong community presence through its podcast, newsletter, and the founders' own following. Its proof is unusually solid for this group: a 4.9 rating from 93 reviews on G2 for its GTM and revenue operations work, one of the largest verified review bases on this list. It recently moved its site to cs2team.com. Two things to note: search is not its main channel, so its own organic footprint is light, and it does not publish pricing.

Best forGrowth-stage B2B tech teams that need marketing, sales, and RevOps aligned so pipeline stops leaking.

What they doSalesPlaybook builds and runs revenue systems for B2B software companies, with a clear focus on the DACH region: Germany, Austria, and Switzerland. Its three services, pipeline generation, HubSpot CRM, and revenue enablement, map to what a Series B software company needs as it moves from founder-led selling to a repeatable motion. It is a HubSpot Diamond Partner with Clay certifications, names its senior team, and, helpfully, publishes pricing: pipeline generation runs from about 4,000 Swiss francs a month, with CRM and enablement scoped separately. Its own search footprint is real but modest, and a chunk of it comes from client case-study pages ranking for client names rather than category terms, which is borrowed demand more than earned. The main filter is geography: if you are not selling into DACH, another firm will fit better.

Best forSeries B B2B software companies selling into DACH that are moving from founder-led sales to a repeatable motion.

What they doVeza Digital comes at demand from the website. It is a B2B and SaaS Webflow agency that pairs design and development with SEO, answer engine optimization, and growth marketing, under a method it calls WAIO for turning sites into AI-search answers. For a Series B company whose site has fallen behind its story, that is a practical entry point: rebuild the site to convert, then keep feeding it search and AI-answer content. It practises what it sells, with a working content hub, low paid reliance, and AI-search signals like an llms.txt file, and it names clients such as Chili Piper, Grata, Northbeam, and Luno. The thing to be clear about is its center of gravity: the core specialty is Webflow and web development, with demand generation attached, so a pure pipeline mandate may want a demand-first shop.

Best forSeries B SaaS teams whose website has fallen behind and needs to convert, with ongoing SEO and AEO.

What they doGrowthSpree is an AI-native demand generation agency for B2B SaaS, pairing senior operators with six proprietary AI tools for Google Ads, LinkedIn Ads, ABM, and content, all pointed at CRM-tracked pipeline rather than lead volume. It sells on a flat monthly fee, month to month, which appeals to a Series B team that wants accountability and no long lock-in. It backs the positioning with genuine original research, like a LinkedIn Ads waste report picked up by Business Insider, and names clients including PriceLabs, Hubilo, Rocketlane, and Hasura. It holds a 4.9 rating from 48 reviews on G2, though those reviews skew heavily to one region. Two caveats: paid channels are the core of the business, so it leans performance over owned content, and it does not publish its flat fee, only that one exists.

Best forSeries B SaaS teams that want paid and demand run as one pipeline-accountable system on a flat fee.

What they doOmni Lab is a paid media and demand generation agency for B2B SaaS, built around a sharp idea: buyers form a shortlist months before they ever fill out a form, so the job is to be on it. It runs pipeline programs across Google, LinkedIn, and Meta and reports on qualified revenue rather than raw leads. It is one of the few agencies here that ranks organically for the very category it sells, holding positions for b2b demand generation agencies on its own pages, so it clearly runs the play. It names clients including Shipwell, Cocoon, and Synthace. The fit signals are worth reading: its best-fit client is already spending around 10,000 dollars a month on paid media, so it suits a Series B team investing in paid, not one trying to cut it.

Best forSeries B SaaS teams investing in paid media that want it run toward qualified revenue, not raw leads.