Captain
ActiveSelf-tuning file search for AI agents
About
Captain syncs complex, multimodal files and cloud storage from sources like S3, SharePoint, and Google Drive, and makes that knowledge searchable for your agents. Instead of stitching together parsers, embeddings, vector databases, rerankers, and retrieval infrastructure, Captain self-tunes the retrieval pipeline to your data and workloads. On benchmarks, this improves accuracy from roughly 78% with standard RAG to over 97% by tuning retrieval to the unique structure and content of your data. Captain is purpose-built for complex, regulated, and high-stakes file search workloads. Learn more at https://captain.dev
Founders
Lewis Lien Polansky· Founder/CEOCEO @ Captain, building self-tuning file search for AI agents. Engineer, designer, founder of a cybersecurity CTF org, recipient of U.S. Congressional recognition for community software, and randomly co-invented the soy-based milk carton.
Edgar Babajanyan· Founder/CTOCTO @ Captain | Published AI NLP Researcher | Built OCR engines @ Boar's Head | Scaled high-performance RAG pipelines for the past 4 years | Built a Cross Region L2 Datacenter
Product launches · 1 launch
Search files with much higher accuracy than RAG (Avg improves 78% → 95%)
Change history · 13 recorded
- September 6, 2026
- Founder profile updated08:00 PM
- YC partner updated08:00 PM
- Launches refreshed08:00 PM
- August 27, 2026
- Pitch updated07:00 PM
- Description rewritten07:00 PM
- August 11, 2026
- Website updated07:00 PM
- August 6, 2026
- Pitch updated07:00 PM
- July 5, 2026
- Launches refreshed08:01 PM
- Founder profile updated08:01 PM
- YC partner updated08:01 PM
- June 21, 2026
- Launches refreshed08:01 PM
- Founder profile updated08:01 PM
- YC partner updated08:01 PM