Upside vs. Apollo.io

Upside is a GTM intelligence platform for B2B revenue teams. It connects to the systems where go-to-market data lives — CRM, marketing automation, meeting recording tools, and ad platforms — and automatically builds a unified, cleaned-up view of what happened on every account and deal. This includes resolving duplicate contacts across systems, reconstructing full touchpoint timelines, detecting buying groups from communication signals, and healing gaps in CRM data.

Apollo.io is an AI-powered go-to-market (GTM) platform that helps revenue teams find, engage, and manage B2B buyers across the entire sales cycle. Apollo.io is the company behind the industry’s first fully agentic GTM platform, transforming how revenue teams execute. Going beyond automation, Apollo’s intelligent agents actively drive results across the entire sales funnel – from prospecting to deal management – all in one place.