CoreWeave announces acquisition of Marimo

CoreWeave, known as the essential cloud for AI, announced Oct. 30 a definitive agreement to acquire Marimo Inc.

Marimo is the creator of the open-source marimo notebook, an AI-native, reactive development environment for Python, purpose-built for AI and data workloads.

The acquisition will integrate Marimo’s technology into the CoreWeave Cloud, supercharging Marimo’s cloud-hosted notebook offering and creating a unified developer experience that spans the entire AI lifecycle of training, inference, data movement and continuous iteration.

The addition strengthens CoreWeave’s vertically integrated platform, empowering developers to build, scale and deploy applications faster and more efficiently.

“This is about supporting the open-source community and unlocking the pace of innovation that modern AI demands,” said Brian Venturo, co-founder and chief strategy officer of CoreWeave.

“CoreWeave is creating the most complete environment for AI development, from prototype to production, and with Marimo as part of our platform, we are giving builders the tools to iterate faster and deploy smarter across every stage of the AI lifecycle.”

Together, CoreWeave and Marimo will empower all kinds of developers to harness the power of AI and data, ultimately ushering in the next generation of AI-native products. Marimo’s flagship product, the marimo notebook, offers a fully reproducible and git-friendly programming environment that lets developers move seamlessly from initial experimentation to large-scale production deployments.

“We created marimo because we believed that Python developers deserved a dramatically better programming environment for working with data — one that blended the best parts of interactive computing with the reusability and reproducibility of traditional software,” said Akshay Agrawal, co-founder and chief executive officer of Marimo.

“Joining CoreWeave lets us double down on that vision and execute on it at an even greater scale. Our shared goal is to build the world’s best programming environment for AI and data work.”

CoreWeave’s announcement follows the recent acquisition of OpenPipe, which strengthened its AI cloud with advanced reinforcement learning tools to power reliable, scalable AI systems. In May, CoreWeave announced the acquisition of Weights & Biases, creating an end-to-end AI developer platform, combining compute and MLOps tools to speed AI model development and deployment.

This month, CoreWeave announced its intent to acquire Monolith AI, a pioneer in applying artificial intelligence and machine learning to solve complex physics and engineering challenges.