Best Agent Sandboxes in 2026: Cold Start, Per-Second Pricing, and Network Policy Across E2B, Daytona, Modal, Cloudflare, and Vercel
MarkTechPost 1 month ago 15
E2B, Daytona, Modal Sandboxes, Cloudflare Sandbox SDK, and Vercel Sandbox were compared across cold starts, per-second pricing, filesystem persistence, and egress policy to make their agent-sandbox units measurable. The August 21, 2026 benchmark run reported median time-to-interactive values ranging from 0.67s (Vercel Sandbox) to 5.06s (Cloudflare Sandbox) with differing success rates and burst conditions. The result is a practical testing and costing framework (TTI/task checkpoints plus normalized rate-card calculations) that changes provider selection based on concurrency capacity, idle billing, persistence defaults, and how network rules are applied.