Product updates: Sandbox Sidecars, new models, a refreshed dashboard, and more

Summary

Modal added day-zero support for Kimi K3, Qwen 3.8, GLM 5.3, and GLM 5.3 Flash on Auto Endpoints, with custom DFlash speculators boosting throughput to 460 tokens per second. New environment-level budgets give Team and Enterprise workspaces per-environment compute limits, while the pricing multiplier for broad region selection dropped from 1.5x to 1.15x. The dashboard got a refreshed navigation, color system, and beta light mode, and Private Environments now support a default No Access role. Sandbox Sidecars are in public alpha, running additional containers via low-latency internal networking, and VM Sandboxes are in public beta with a real Linux kernel for Docker and eBPF. Sandbox directory snapshots and a new filesystem API are now GA, and regional Proxies allow selecting a region for static outbound IPs, while SDK updates improved log APIs and autoscaler reporting.

Takeaways

1. 1

   Modal provided day-zero support for Kimi K3, Qwen 3.8, GLM 5.3, and GLM 5.3 Flash with custom DFlash speculators, achieving up to 460 tokens per second on agentic workloads.

2. 2

   Sandbox Sidecars (public alpha) allow running additional containers alongside a main sandbox on the same host with low-latency internal networking, useful for proxies and multi-container workloads.

3. 3

   VM Sandboxes (public beta) run a real Linux kernel, supporting Docker containers inside sandboxes and Linux features like eBPF, systemd, and cgroups, with better filesystem performance.

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