Seltz

Seltz and Massive cover complementary halves of the AI data stack. Massive gathers and extracts data from anywhere on the web; Seltz makes the web itself instantly searchable for AI agents, returning full documents at sub-200ms latency through an API designed for programmatic consumption.

Where Massive shines on targeted extraction from specific sites, Seltz shines on open-ended retrieval across the live web — the kind of query an AI agent makes when it doesn't know in advance which page holds the answer. Seltz owns its full stack: its own crawler, its own index, no third-party SERP wrappers, with on-prem and private cloud deployment available for enterprise teams. Builders running production AI workflows use the two together to cover both extraction and search without stitching together five vendors.

$100 in free credits to start building at: https://console.seltz.ai/