Acquisition
Jul 2026ZeroEntropy announced it had been acquired by Notion; the whole team joined Notion, models were open-sourced under Apache 2.0, and products were slated to sunset on 2026-09-04.
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Public company, workplace, funding, and market signals
Updated Jul 30, 2026
Overview
ZeroEntropy is a San Francisco-based AI training and inference company that builds specialized retrieval infrastructure and task-specific models for production AI systems, with an emphasis on low-latency, high-accuracy rerankers, embedders, and custom models. The company was acquired by Notion on July 24, 2026; its models were open-sourced under Apache 2.0 and products were scheduled to sunset on September 4, 2026.
Primary product
An API and model suite for AI retrieval infrastructure, centered on rerankers (zerank-2), embeddings (zembed-1), and end-to-end retrieval pipelines.
Founded
2024
Headquarters
San Francisco, California, United States
Team size
1-10
Industry
Technology, Information and Internet
Sub-industry
AI infrastructure / information retrieval / developer tools
Open Positions
0 jobs at ZeroEntropy
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