Five9 vs VAST Data
Side-by-side comparison of AI visibility scores, market position, and capabilities
Enterprise cloud contact center with $950M revenue; pure-cloud ACD and predictive dialer with Genius AI virtual agents and agent assist for enterprise customer service automation.
About
Five9 is a cloud contact center (CCaaS) platform providing inbound and outbound call center infrastructure, agent desktop, intelligent virtual agents (IVA), and workforce management for enterprises and mid-market companies replacing on-premise call center hardware. Founded in 2001 and headquartered in San Ramon, California, Five9 is listed on NASDAQ and generates approximately $950 million in annual revenue serving over 2,800 customers including large enterprises that process millions of customer contacts monthly.
Closed a $1 billion Series F at a $30 billion valuation in April 2026, backed by NVIDIA and Fidelity, after surpassing $500M in committed ARR with its AI Operating System platform.
About
VAST Data builds the AI Operating System — a unified platform combining all-flash storage (DataStore), an AI-native database (DataBase), and a globally distributed namespace (DataSpace) into a single infrastructure stack. The platform is purpose-built for organizations training, running, and managing AI models and agents at scale. In 2026, VAST launched AgentEngine, a production-grade deployment layer for multi-agent AI stacks with full auditability and MCP integration.
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