HubSpot Marketing Hub's free tier includes core tools such as forms, contact management, ad management, live chat, conversational bots, and reporting dashboards, making it a functional starting point. G2 reviewers frequently note that the free version provides enough to get started but quickly reveals its limits. HubSpot Marketing Hub's paid plans unlock progressively more powerful capabilities: the Starter tier at $20/month removes HubSpot branding and adds email marketing, while the Professional tier at $890/month introduces marketing automation, A/B testing, SEO tools, social media, landing pages, and Salesforce integration. G2 users consistently highlight that automation workflows, available only in Professional and above, are the primary driver for upgrading.