Modal Product Updates: Sandbox Sidecars, Kimi K3 and GLM 5.3 Support, Refreshed Dashboard

Modal added day-zero support for four open-weight models — Kimi K3, Qwen3.8-2.4T-A95B, GLM-5.3, and GLM-5.3-Flash — on its Auto Endpoints, with Kimi K3 running at 460 tokens per second on agentic workloads via a custom DFlash speculator. Sandbox Sidecars entered public alpha, VM Sandboxes reached public beta, and the broad-region pricing multiplier dropped from 1.5x to 1.15x. The dashboard was refreshed with a light mode beta, and Python SDK 1.5.5 plus JavaScript and Go SDK 0.10.0 shipped.