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Captain (YC W26) — Self-tuning file search for AI agents

Captain appears in Y Combinator's company directory in the Winter 2026 batch, listed 2025-11-07. Self-tuning file search for AI agents.

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Captain: Accepted into Y Combinator Winter 2026

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Captain

New accelerator entry · 2025-11-07 · the record

Winter 2026
batch
2
people
Early
stage
United States of America
region
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In their words

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

What the record says

BatchWinter 2026
Announced2025-11-07
StageEarly
StatusActive
Team size2
IndustryB2B
Sub-industryB2B -> Infrastructure
SectorsB2B, API, Data Engineering, Infrastructure
RegionsUnited States of America, America / Canada
BasedSan Francisco, CA, USA
HiringNo
Sitehttps://captain.dev

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If you're behind Captain: acceptance into a YC batch is one of the few weeks a young company gets looked up by people who matter — investors, other founders, press. FoxPlug turns the commits, deploys, and releases you're already making into that story automatically, so anyone who looks finds something current. FoxChat puts a guide on your own site so the people YC's own page just sent you don't read one line and leave.

Sourced from the company's Y Combinator directory entry.

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Permanent URL: https://mentionfox.com/funding/yc-captain
Last updated 2026-09-26
Primary record: Y Combinator directory entry
Captain (YC W26) — Self-tuning file search for AI agents. MentionFox, 2026-09-26. https://mentionfox.com/funding/yc-captain