The engineering world is waking up to a hard tension: hand-held coding, where a developer drives every keystroke, does not scale inside an organization that ships thousands of changes per week. Walden Yan, Cognition's co-founder and CPO, frames this as the moment **background agents** go from toy to critical infrastructure. The concrete proof is that **Devin now generates 80% of commits across Cognition's own repos**, up from 16% before the December 2025 model inflection, and merged PR volume has grown 7x. The problem is not whether agents can write code—it is whether they can reliably go from a spec written in Slack to a merged, tested, properly reviewed pull request without breaking your codebase every two weeks. Cole Murray's open-source **OpenInspect** project is an attempt to replicate this pattern for teams that cannot or should not buy a proprietary system.

Google announces the general availability of GKE Agent Sandbox, an open-source, Kubernetes-native execution environment for secure, low-latency AI agent workloads, alongside the preview of Agent Substrate, a new open-source project for ultra-scale agentic infrastructure. The sandbox integrates pod snapshots, a warm pool API for sub-200ms allocation, and gVisor security.