Clearbit provides real-time firmographic, technographic, and contact enrichment that plugs into CRMs, marketing automation, and analytics tools. Acquired by HubSpot, it is one of the most widely integrated enrichment APIs in the B2B stack.
Best-in-class firmographic enrichment with the broadest API surface. Industry standard for enrichment.
Clean API docs and native HubSpot integration post-acquisition. Easy to get started.
Integrates with virtually every GTM tool — CRM, CDP, analytics, and automation platforms.
Free tier is limited. Paid plans are premium. HubSpot users get native access on certain tiers.
Rules-based matching and scoring. AI used for data inference but not a core AI product.
Mature product with extensive documentation, large user base, and strong HubSpot community support.
Enterprise-ready with high-volume API, SSO, and compliance certifications.