Today we're excited to announce that Butter is joining Modal!
]] ]]]][![![![ [![Butter founder Erik Dunteman and researcher Raymond Tana will be joining the Modal Sandbox team as part of the acquisition.
]] ]]]][
Expanding Modal Sandboxes
] ]]]][![![![ [![The Butter team's experience is in agent harness engineering, with past focuses on computer-use agents, deterministic memory systems, skills, and codegen. Most recently, they created bVisor, a virtual linux kernel built from scratch in Zig to solve their own need for lightweight, ephemeral sandboxes.
]] ]]]][![![![ [![By bringing Butter's engineering and expertise to Modal, we're taking one step closer to making Modal Sandboxes a best-in-class product experience.
]] ]]]][![![![![![“ I've become convinced that code generation is the solution to many of the challenges we faced building AI agents at Butter. Determinism, auditability, fine-grained permissioning—it's all codegen. I believe there is no better team in the world than Modal to support this at a platform level.”
Modal's relationship with Erik (Dunteman) goes years back, starting from his time as cofounder of Banana, a serverless GPU platform. What started as a friendly rivalry turned into mutual respect, with Erik briefly contracting with Modal before going on to start Butter. We are thrilled to welcome him back home.
]] ]]]]]