6sense vs Clay: 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.

Clay is a GTM data enrichment and workflow platform for sales, marketing, growth, and RevOps teams. Its table-based workspace supports prospect lists, company and contact enrichment, provider waterfalls, AI research, signals, audiences, scoring, and outbound actions. Clay says it began as a data marketplace for researching prospects, with early use focused on enriching and exporting company and contact lists. The current product is positioned as infrastructure for acquiring data, running agentic workflows, and launching GTM plays. Clay says users can combine more than 150 marketplace partners, while Claygent supports web research for custom data points. The platform suits teams that need configurable processes for prospecting, enrichment, research, qualification, and activation instead of a single packaged database.

A typical Clay workflow begins with a table of companies or people, then applies search, enrichment, AI research, scoring, filtering, and an outbound or destination action. Provider waterfalls can use several marketplace sources, and users can bring their own provider or AI API keys. Claygent supports custom web research fields, while Clay Sequencer supports email workflows. Launch adds phone enrichment, job-change and other signal tracking, reusable functions, email campaign integrations, and larger table capacity. Growth adds CRM synchronization, data-warehouse synchronization, HTTP API connections, webhooks, web-intent signals, ad audiences, and priority support. Enterprise adds larger-scale administration, SSO, SCIM, RBAC, connection controls, custom agreements, and a dedicated growth strategist.

Clay requires careful workflow and usage management because teams must understand tables, provider waterfalls, Actions, Data Credits, AI pricing, and reruns before forecasting spend. Actions reset each billing cycle, while unused Data Credits on monthly plans can accumulate up to twice the monthly allowance. Annual plans can roll over up to 15 percent of annual credits under stated renewal conditions. G2 reviewers praise centralized prospect research, enrichment, AI capabilities, and automation, while reported drawbacks include cost, a steep learning curve, and credit consumption. Apollo is a closer fit for packaged prospecting and sequencing, ZoomInfo for a proprietary intelligence database, and Outreach for sales engagement. Clay is more focused on configurable data operations and orchestration.