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Indexical

DefunctYC W23

San Francisco, US · Founded 2022 · 2 employees · 3 known investors

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Indexical provides an AI semantic indexing and retrieval platform that uses dense vector embeddings and hybrid search (combining vector similarity with keyword retrieval) to improve enterprise search accuracy. The platform serves enterprise organizations seeking better document retrieval, question-answering, and knowledge discovery across domain-specific corpora.

Also known as Raio Technologies, Inc. · Nebula

AI & Machine LearningData & InfrastructureDeveloper ToolsEnterprise SoftwareSaaSGenerative AIB2BEnterpriseUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (W23)

Indexical was founded in 2022 by Shanelle Roman and Vishnu Menon.

SRShanelle Roman
Shanelle RomanCo-Founder2022–2025She previously worked as a product manager at Google on advertising products and holds a Computer Science degree from Yale.
VMVishnu Menon
Vishnu MenonFounderuntil 2025Vishnu Menon is a software engineer who previously co-founded an ML startup and led data and platform initiatives at a marketing technology company. He holds a degree in Computer Science from Duke University.

Investors · 3

Andreessen HorowitzreportedMenlo Park · $500K – $50M

How we know: Y Combinator's founder network · Not right? Tell us

ContraryreportedSan Francisco · $2M

How we know: Y Combinator's founder network · Not right? Tell us

Related companies · 5

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StracStrac helps enterprises protect sensitive information during customer interactions by preventing data exposure incidents. The company builds security tools to enable secure handling of personally identifiable information without operational friction.
KyberKyber automates the drafting, review, and delivery of claims communications for property and casualty insurance adjusters and carriers. The platform uses AI to generate compliant, personalized notices from policy and claim data, then tracks and delivers them across email and print channels.
InariInari analyzes customer feedback, support tickets, and CRM data to identify product opportunities and customer insights, automatically surfacing relevant information and linking findings to backlog items.

Companies working in the same space as Indexical.

Legal entities · 1

corporate structure
Raio Technologies, Inc.

In the news

Nebula 🌌 - Understand & debug enterprise-scale codebasesycombinator.com · Mar 2023

Frequently asked questions

What does Indexical do?
Indexical provides an AI semantic indexing and retrieval platform that uses dense vector embeddings and hybrid search (combining vector similarity with keyword retrieval) to improve enterprise search accuracy. The platform serves enterprise organizations seeking better document retrieval, question-answering, and knowledge discovery across domain-specific corpora.
Who founded Indexical?
Indexical was founded by Shanelle Roman, Vishnu Menon in 2022.
Who are Indexical's investors?
Indexical's investors include Y Combinator, Andreessen Horowitz, Contrary.
Where is Indexical headquartered?
Indexical is headquartered in San Francisco, US.