This week in COSS: Unleash raised a $35 million Series B to expand its enterprise feature-flag platform, while Mistral AI closed a €3 billion Series D to scale compute and commercial growth. Moonshot AI is considering a Hong Kong IPO of up to $5 billion, Thinking Machines Lab is reportedly in talks for a $5 billion–$6 billion round, and ClickHouse acquired RunReveal to bring security-data expertise in-house.

Elsewhere, ClickHouse’s annual recurring revenue passed $350 million amid demand for AI workloads; OpenBB announced it is winding down and open-sourcing its product suite; and IBM committed $240 million to a Together AI inference cluster on IBM Cloud. OpenAI released its long-awaited report on its rogue model’s breach of Hugging Face’s infrastructure, while Automattic’s board placed founder and CEO Matt Mullenweg on leave and named CFO Mark Davies interim CEO.

We also feature the following companies in Cossmology: Astro, Automatisch, Folo, InteraApps, LiveKit, NextUI Inc., Ockam, OpenEBS, TensorZero, and Timefold.