Captain
Self-tuning search for products and files
Captain at a glance
- Y Combinator batch
- Winter 2026
- Status
- Active
- Industry
- B2B
- Team size
- 2 people
- Location
- Not recorded
- Website
- Not recorded
Every field above comes from the Y Combinator company record. Nothing is estimated.
About Captain
Captain makes product catalogs and complex, multimodal files searchable for customers and AI agents. It syncs files from sources like S3, SharePoint, and Google Drive and tunes search to your data and workloads. Instead of stitching together parsers, embeddings, vector databases, rerankers, and retrieval infrastructure, developers use Captain to power product search and file retrieval through managed APIs. On evaluated file-search benchmarks, Captain’s tuning improved retrieval accuracy from roughly 78% with standard RAG to over 97%. Built for complex catalogs and demanding file-search workloads, including regulated and high-stakes applications.