ZeroEntropy (YC W25)

We're excited to announce that @NotionHQ  has acquired ZeroEntropy.

We first got to know the Notion team as one of our top customers: Notion AI has been running on our reranker zerank-2, replacing models from larger, better-funded competitors with an 85% latency improvement. Now our whole team is joining Notion to keep building.

Alongside the acquisition:
🔓 All of our models are now open source under Apache 2.0 on @huggingface , run them through any inference provider, no commercial license required.
📅 All ZeroEntropy products remain fully supported until September 4th, 2026, after which they will be sunset.

Our migration guide covers every path, and our team is available on Slack, Discord, and email to help every customer transition.

Full story on our blog and migration guide below.

Thank you to our customers, investors, and partners for believing in ZeroEntropy.
It's been a privilege to serve you, and we can't wait to keep building things you love at Notion.

Join us with @mastra (TypeScript framework for Agents), @mem0ai (the long-term Agent memory layer), and @zeroentropy_ai(fastest and most accurate rerankers) on Oct 17th for our first Context Engineering Webinar!

luma.com/rehr5jl2

Excited to partner with @llama_index !
Here is how you can leverage both LlamaIndex and ZeroEntropy to build a powerful parse-retrieve-rerank workflow.
Link in the comments