Google donates Agent Substrate, gVisor, OpenRL to CNCF; post reveals who runs agent swarms in prod
michaelTM_ai · reddit · 2026-11-11
Google donated Agent Substrate, gVisor, and OpenRL to the CNCF — and a Reddit post notes the real signal is the named production users.
- Problem: agents run code for seconds then block on models/APIs/humans, so one container per agent mostly burns idle memory.
- Substrate: snapshots idle agents and restores them on any warm worker in under 500ms; claims 10x container density and 500+ suspend/resumes per second.
- Who's actually running this: Anthropic and OpenAI use gVisor for code-execution isolation; Modal, Snowflake, Northflank run sandbox infra; Nous Research builds Hermes enterprise on Substrate; Spiritt runs an agent or swarm per customer.
Author's takeaway: everyone talks multi-agent, but production swarms need untrusted-code isolation, per-agent identity, secrets kept out of sandboxes, and no paying for idle agents — most "swarms" are still 3 subagents in one terminal session.
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