ZeroEntropy
ZeroEntropy is a YC Winter 2025 (W25) company. Team of 2.
About ZeroEntropy
Summary
ZeroEntropy builds specialized retrieval models, including rerankers and embedding models, for developers shipping AI products. Its API sits between a knowledge base and an LLM, replacing standard semantic search with higher-accuracy retrieval to cut hallucinations in Q&A bots and AI agents. Target customers span legal, finance, healthcare, manufacturing, and e-commerce teams building on document-heavy pipelines. ZeroEntropy has since joined Notion.
Business model
API access via a tiered pricing model, with enterprise options for on-premises deployment and dedicated infrastructure with SLAs.
Go-to-market
Developers adopt the API self-serve through documentation, a Slack community, and a Discord; enterprise sales targets larger teams needing on-prem or dedicated deployments across regulated industries.
From the Y Combinator listing
High accuracy search API over unstructured data.
We are on a mission to build the world’s most accurate search engine over complex and unstructured documents. Most AI products - whether Q&A bots or AI agents - depend on retrieval systems to provide relevant context from knowledge bases. Yet, the vast majority of these systems rely on basic semantic or hybrid search methods, which still frequently fail. These mistakes lead to inaccurate responses and hallucinations by LLMs, frustrating developers and end users alike. That is why we’re building ZeroEntropy: to add intelligence to retrieval and empower developers to create AI products that are more reliable and accurate.
Facts
- B2B / B2B -> Infrastructure
- 2
- Active
- Early
Founders (2)
- Nicholas Pipitone
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