Captain (YC W26) Review 2026: Automated RAG for Files Explained
Captain is an API-first, self-tuning file search and fully-managed RAG retrieval platform from the Y Combinator W26 batch, founded by Lewis Lien Polansky (CEO) and Edgar Babajanyan. It indexes cloud storage (S3, R2, GCS, Supabase, Backblaze) and SaaS sources like Google Drive into one queryable index, exposing a single query API designed for AI agents rather than end-user knowledge apps. This 2026 review breaks down what Captain actually does, its five-layer architecture, real pricing based on the published rate card, how it compares to DIY RAG and rivals like Vertex File Search and Glean, the Ragie shutdown signal, and whether it is worth adopting for production teams in 2026. ...