Daytona vs Modal: comparing AI code execution sandboxes in 2026

Daytona, Modal, and Northflank are platforms designed to provide secure runtime environments for executing untrusted code, each offering unique features and approaches. Daytona is focused on SDK-managed sandbox lifecycle automation, utilizing snapshots for creating and reusing warm sandboxes, and includes configurable firewall controls for network management. In contrast, Modal is an AI infrastructure platform where sandboxes are defined at runtime with gVisor-based isolation and stringent network restrictions, emphasizing session timeouts and snapshot-based state preservation. Northflank distinguishes itself by offering microVM isolation through Kata Containers, Firecracker, and gVisor, supporting both ephemeral and persistent environments, and integrating full workload orchestration including APIs, workers, databases, and GPU workloads. The choice between these platforms depends on factors like lifecycle management, environment definition, isolation needs, and networking requirements, with Northflank also providing options for deploying in one's own infrastructure for greater control and compliance.