Apollo.io Overview
Pro stress-test →Apollo.io is a go-to-market (GTM) platform that teams use to not just generate leads but prioritize outreach, create messages through generative AI, forecast revenue, and make calls. The platform has a database of over 250 million contacts and 60 million companies, serving as a unified alternative to fragmented sales stacks. As of May 2026, Apollo has said its revenue has grown more than fivefold since its August 2023 Series D, positioning it as a high-velocity GTM solutions leader.
Strategic Profile
Pro stress-test →Apollo found product-market fit giving SMB and startup sales teams access to a vertically integrated set of lead prospecting and outreach tools, and has since pushed deliberately upmarket, with enterprise accounts growing 400% over the past year. Apollo has extended this vision further with an AI Assistant that powers end-to-end agentic workflows across the GTM platform, positioning Apollo as the first AI-native all-in-one GTM platform and boosting meetings booked by 2.3x for users.
Competitive Landscape
Pro stress-test →Apollo's top competitors include ZoomInfo, Seismic and Showpad. ZoomInfo remains the largest incumbent data provider with CRM integrations; Seismic focuses on sales enablement and content management; Showpad emphasizes sales presentations. Apollo differentiates through vertical integration of prospecting, engagement, and AI-driven workflow automation in a single platform.
Industry Context
Apollo.io operates in Customer Relationship Management (CRM) Software.
Key facts
Founded: 2015 · Headquarters: San Francisco, US · Employees: 1,600 (as of 2026) · Revenue: $150M ARR (as of May 2026)