6sense vs Demandbase: pricing, features and which to choose

6sense was founded in San Francisco in 2013 and grew into one of the two largest account-based marketing (ABM) vendors, alongside Demandbase. It raised a $200 million Series E in 2022 at a $5.2 billion valuation. The product watches anonymous research activity across the web, matches it to companies, and tells sellers and marketers which accounts are likely in market and how far along they are. 6sense now calls itself an intelligence engine for agentic go-to-market, and most 2026 releases push its data into other tools, including Claude, ChatGPT and Salesforce Agentforce, instead of asking users to live in its dashboards.

The platform splits into Revenue Marketing and Sales Intelligence. On the marketing side, teams define keywords and personas, 6sense scores accounts into buying stages, and the system builds segments for display and LinkedIn ads, website personalization and email. An account that crosses a threshold becomes a 6QA, or 6sense Qualified Account, and is routed to sales. Sales Intelligence gives reps account pages, a Chrome extension that works inside LinkedIn, Sales Navigator, Salesforce, Salesloft and Outreach, alerts, buying-group discovery and contact data. Credits buy access to emails and phone numbers and power list building. AI Email Agents can write, send and reply to prospecting emails based on intent signals.

The common complaints are cost, a long setup before predictions become trustworthy, and intent signals that some buyers find noisy for niche categories. Contact data coverage outside North America draws criticism on review sites. Demandbase is the closest rival, with similar intent and advertising features and a median contract slightly higher, at about $68,600 according to Vendr. ZoomInfo leads on contact data and is often bought for that alone. Clay and Apollo cover account research and outreach at published prices from under $100 a month. 6sense fits B2B companies with enough deal volume and ad budget to act on account scoring; small teams should start with Apollo or Clay.

Demandbase was founded in 2006 and is one of the original account-based marketing (ABM) vendors. It grew partly through acquisitions, including Engagio in 2020 and the InsideView data business in 2021, which gave it its own contact and company database. Demandbase says that database now covers more than 342 million contacts across 13 million companies. The flagship product is Demandbase One, sold as one platform for marketing, sales, advertising and data instead of separate modules. Its pitch in 2026 is agentic marketing: AI agents that plan and run campaigns, plus a headless setup that sends Demandbase data into the AI tools and CRMs teams already use.

Most customers start by defining an ideal customer profile and target account list. Demandbase identifies companies visiting their website, scores accounts on intent and engagement, and groups them into journey stages. Marketers then run display, video and social ads through Demandbase's own B2B demand-side platform, personalize website content by account, and hand engaged accounts to sales with alerts and account pages in Salesforce. Buying groups are a native object, so teams can see which roles at an account are active. Reporting ties ad impressions and site visits to pipeline. Demandbase does not split the product; a sales team that wants only intent data still buys Demandbase One.

The main drawbacks are cost, all-or-nothing packaging and the work needed before account scoring pays off. Reviewers also mention a dense interface and a learning curve for new admins. 6sense is the closest competitor, with a slightly lower Vendr median of about $62,000 and a stronger reputation for predictive buying stages. ZoomInfo is stronger on raw contact data, and RollWorks targets smaller teams with simpler ABM advertising. HubSpot Marketing Hub covers lighter account-based campaigns inside a CRM many teams already own. Demandbase fits enterprise B2B marketers who want data, ads and agents from one vendor; teams under a $50,000 budget should look at RollWorks or Mojo alone.