Key Takeaways

Three credible open-source AI SREs exist in 2026 : Aurora (Arvo AI), HolmesGPT (Robusta + Microsoft, CNCF Sandbox), and K8sGPT (CNCF Sandbox). All three are Apache 2.0.

Only one is a true multi-step agent. HolmesGPT runs an iterative ReAct loop. K8sGPT is a rule-based scanner that uses an LLM only to explain findings. Aurora is a multi-step LangGraph agent with cross-cloud execution.

Only Aurora handles multi-cloud out of the box (AWS, Azure, GCP, OVH, Scaleway, plus Kubernetes). HolmesGPT covers Kubernetes plus 30+ observability integrations. K8sGPT is Kubernetes-only.

Only Aurora generates remediation pull requests.…