Algolia is a battle-hardened search infrastructure specialist with near-unmatched developer tooling, sub-millisecond speed, and a decade of trust built on real certifications and 18,000+ customers. It excels when the search box is customer-facing — think ecommerce product discovery or content site search — and its freemium model means smaller teams can actually get started. Glean operates in a different arena: it's an enterprise-wide knowledge layer that connects to every app your company uses and lets employees find anything, from anywhere, with AI-powered context. Its funding trajectory and growth rate signal a company that enterprises are betting on seriously. The meaningful difference is audience. Algolia improves the search experience your customers see. Glean improves the search experience your employees live with every day. Algolia has sharper developer ergonomics and a more accessible price point. Glean has stronger enterprise security posture conversations and a more ambitious AI roadmap baked into its core product. Choose Algolia if you're building or improving a customer-facing search experience, especially in ecommerce or content. Choose Glean if your company is large enough that people routinely waste hours hunting for internal information — that's the exact problem Glean was built to eliminate, and it does it better than anything else in its class.