Don't Vibe Code Your Agent Infrastructure - Akshat Bubna, Modal

Akshat Bubna, CTO of Modal, explains what AI agents actually need from the infrastructure underneath them, starting with a spreadsheet where every cell is backed by its own agent. He walks through the building blocks: a workspace for each agent, state that persists for days without paying for idle compute, resources that stretch and shrink as the agent works, GPUs on demand, shared file systems for agents that collaborate, network controls that keep credentials and data from leaking, and observability agents can read themselves. He makes the case against vibe coding your own sandbox platform, shares what scale looks like today, and describes where agent infrastructure is heading. Chapters: 0:00 Intro 0:24 Every spreadsheet cell backed by an agent 1:33 What that architecture needs 3:15 What is Modal? 4:03 Agents need a workspace 5:03 Workspaces that persist 6:21 Agents need elastic resources 7:41 Agents need GPUs 9:02 Agents collaborating through shared files 9:57 Keeping agents from leaking data 11:20 Observability for agents 12:12 Why not to vibe code a sandbox platform 13:31 What scale looks like 14:54 Separating the brain from the hands 15:37 From pets to cattle to microbes Akshat Bubna https://modal.com Join us in SF for the second annual AIE CODE summit: https://aie.codes our last flagship summit of 2026. Applications live now!