Similarweb Sales Intelligence does not offer a permanent free tier, but G2's pricing data confirms a free trial is available for evaluation. The fully paid plan includes access to up to 37 months of historical data, up to 1,000 custom AI insights per month, up to 2,500 contacts per month, up to 10,000 exports per user per month, CRM integration, API enrichment, enterprise security features like SSO and 2FA, and an AI agent for meeting preparation. G2 reviewers note that the free version has limited feature access, with several users flagging that the most useful capabilities, including advanced filters and contact data, are locked behind Similarweb Sales Intelligence's paid plans.