Cirrus Labs Joins OpenAI to Build Agent Infrastructure — 267 Points on HN

Hacker News·high signal

Cirrus Labs, the bootstrapped company behind Tart (most popular Apple Silicon virtualization tool) and Cirrus CI, announced it's joining OpenAI's Agent Infrastructure team. The team will relicense all source-available tools (Tart, Vetu, Orchard) under more permissive licenses and stop charging licensing fees. Cirrus CI shuts down June 1, 2026. This signals OpenAI investing directly in the 'agent runs code in sandboxed environments' infrastructure layer — a talent acqui-hire for the people who built macOS virtualization tooling.