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YC List Spring 2026

YC SP26 · Active

OpenProse

An open-source operating system for reliable long-running agents

Class
Spring 2026
Status
Active
Industry
B2B
Location
Boston, MA, USA; Remote
Team size
3

Website

https://prose.md

About

OpenProse is building open-source infrastructure for long-running AI work: a declarative language plus a reactive harness/runtime for reliable agent workflows.